Index

Found 551 pages:

#	Page	Tags and summary
1	SpiderMonkey	SpiderMonkey
		Standalone source code releases can be found on the Releases page.
2	Creating JavaScript jstest reftests	Junk, NeedsUpdate
		No summary!
3	Creating JavaScript tests	Automated testing, Build documentation, Guide, QA, SpiderMonkey
		In which test suite does your new test belong?
4	Creating JavaScript jstest reftests	Junk, NeedsUpdate
		This page will have content soon.
5	Creating JavaScript jstest reftests
		In the js/src/tests directory, there are a few important subdirectories.
6	FOSS	Guide, SpiderMonkey
		Feel free to add your own SpiderMonkey-based open source projects (and if necessary add categories)!
7	Future directions	Guide, Mozilla, SpiderMonkey
		This article documents future directions in functionality, design, and coding practices for SpiderMonkey. It can be read as something like an "ideal future state" for the engine. That means the code as it is today won't match this document, and that's OK. Whenever practical, new code and changes should move code closer to the ideal future. And of course, the idea of the future is always evolving in time as things change and we learn more.
8	GC Rooting Guide	SpiderMonkey
		No summary!
9	Getting SpiderMonkey source code	Guide, SpiderMonkey
		You can get the SpiderMonkey source code in gzipped form or directly from the Mercurial repository.
10	Hacking Tips	SpiderMonkey
		This page list a few tips to help you investigate issues related to SpiderMonkey. All tips listed here are dealing with the JavaScript shell obtained at the end of the build documentation of SpiderMonkey. It is separated in 2 parts, one section related to debugging and another section related to drafting optimizations. Many of these tips only apply to debug builds of the JS shell; they will not function in a release build.
11	How to embed the JavaScript engine	Embedding Mozilla, JavaScript, SpiderMonkey, Tutorial
		See also JSAPI User Guide. In particular, it has more and better code examples!
12	Index	Index, MDN Meta, SpiderMonkey
		Found 551 pages:
13	Introduction to the JavaScript shell	SpiderMonkey
		To get the SpiderMonkey JavaScript shell, see the SpiderMonkey Build Documentation or download a compiled binary for your platform from the Nightly Builds.
14	JIT Optimization Outcomes
		SpiderMonkey's optimizing JIT, IonMonkey, uses different optimization strategies to speed up various operations. The most typical operations that are relevant for fast program execution are property accesses and function calls.
15	JIT Optimization Strategies	SpiderMonkey
		SpiderMonkey's optimizing JIT, IonMonkey, uses various strategies to optimize operations. The most commonplace operations that are relevant for fast program execution are property accesses and function calls.
16	JSAPI Cookbook	SpiderMonkey
		This article shows the JSAPI equivalent for a tiny handful of common JavaScript idioms.
17	JSAPI User Guide	JSAPI, SpiderMonkey
		This document explains how to embed SpiderMonkey, the Mozilla JavaScript engine, in your C++ program.
18	JSAPI reference	NeedsContent, SpiderMonkey
		JS::DeflateStringToUTF8Buffer
19	BOOLEAN_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		BOOLEAN_TO_JSVAL converts a bool argument, b, to a boolean jsval.
20	DOUBLE_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		DOUBLE_TO_JSVAL is the inverse of JS::ToNumber.
21	INT_FITS_IN_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		Determines if a specified C integer value, i, lies within the range allowed for integer jsvals. If so, INT_FITS_IN_JSVAL returns TRUE, and i can be cast to jsval by calling INT_TO_JSVAL(i). Otherwise, INT_FITS_IN_JSVAL returns FALSE. In this case, the application can still convert i to a jsval using JS_NewNumberValue.
22	INT_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		INT_TO_JSVAL converts a C integer, i, to a jsval.
23	JS::Add*Root	JSAPI Reference, NeedsContent, Obsolete, Reference, Référence(2), SpiderMonkey
		These functions are obsoleted, use JS::PersistentRooted instead.
24	JS::AutoIdArray	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::AutoIdArray takes the ownership of JSIdArray, and frees it in destructor by calling JS_DestroyIdArray.
25	JS::AutoSaveExceptionState	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::AutoSaveExceptionState saves and later restores the current exception state of a given JSContext.
26	JS::AutoValueArray	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::AutoValueArray<N> holds a rooted array of JS::Value. This is typically used for local variables being passed to function which requires JS::HandleValueArray or a pointer to JS::Value array.
27	JS::AutoVectorRooter	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::AutoVectorRooter<T> holds a variable-size rooted array of type T.
28	JS::BooleanValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
29	JS::Call	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::Call calls a specified function, fun, on an object, thisObj. In terms of function execution, the object is treated as this.
30	JS::CallArgs	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CallArgs is helper class encapsulating access to the callee, this value, arguments, and argument count for a function call.
31	JS::CloneFunctionObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CloneFunctionObject creates a new function object from funobj. The new object has the same code and argument list as funobj. If scopeChain is supplied, it uses scopeChain as its enclosing scope. If scopeChain is omitted, it creates a new function object in cx's global. This can be helpful if funobj is an extant function that you wish to use as if it were enclosed by a newly-created global object.
32	JS::Compile	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::Compile compiles a script, srcBuf, chars, bytes, or file, for execution.
33	JS::CompileFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CompileFunction compiles a function from a text string chars, bytes, or srcBuf.
34	JS::CompileOffThread	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CompileOffThread compiles a script, chars for execution.
35	JS::CompileOptions	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Some methods of JS::OwningCompileOptions and JS::CompileOptions return the instance itself to allow method chain.
36	JS::Construct	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::Construct calls a specified function as a constructor, fun.
37	JS::CreateError	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CreateError creates an Error object with specified properties.
38	JS::CurrentGlobalOrNull	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::CurrentGlobalOrNull() returns the global object for whatever function is currently running on the context. In other words, it returns the global object on the current scope chain.
39	JS::DeflateStringToUTF8Buffer	JSAPI Reference, Refere, SpiderMonkey
		JS::DeflateStringToUTF8Buffer encodes src as UTF8. The caller must either ensure dst has enough space to encode the entire string, or pass the length of the buffer as dstlenp. In which case, the function will encode characters from the string until the buffer is exhausted. Does not write the null terminator.
40	JS::DoubleNaNValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
41	JS::DoubleValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
42	JS::Evaluate	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::Evaluate compiles and executes a script in the specified scope, obj or scopeChain.
43	JS::FalseValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
44	JS::Float32Value	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
45	JS::GetDeflatedUTF8StringLength	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::GetDeflatedUTF8StringLength returns the length of the char buffer required to encode s as UTF8. The returned length does not include the null-terminator.
46	JS::GetFirstArgumentAsTypeHint	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
47	JS::GetSelfHostedFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::GetSelfHostedFunction creates a new JavaScript function implemented in self-hosted JavaScript.
48	JS::Handle	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Here, ptr represents the private member of JS::Handle<T>, typed with T.
49	JS::HandleValueArray	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::HandleValueArray is a handle to an array of rooted values. This is useful as a parameter type, or a temporal local variable for it.
50	JS::IdentifyStandardInstance	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
51	JS::Int32Value	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
52	JS::IsCallable	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::IsCallable returns whether the given function object is callable.
53	JS::MutableHandle	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Here, ptr represents the private member of JS::MutableHandle<T>, typed with T *.
54	JS::NewFunctionFromSpec	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
55	JS::NullHandleValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::NullHandleValue is a JS::HandleValue constant that represents the JavaScript value null.
56	JS::NullValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
57	JS::NumberValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
58	JS::ObjectOrNullValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
59	JS::ObjectValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
60	JS::OrdinaryToPrimitive	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::OrdinaryToPrimitive converts a JavaScript object to a specified type value, by the algorithm specified in ES6 draft rev 28 (2014 Oct 14) 7.1.1, second algorithm.
61	JS::PersistentRooted	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Here, ptr represents the private member of JS::PersistentRooted<T>, typed with T.
62	JS::PropertySpecNameEqualsId	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::PropertySpecNameEqualsId determines if the given JSPropertySpec::name or JSFunctionSpec::name value equals the given jsid, and returns true if so.
63	JS::PropertySpecNameIsSymbol	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::PropertySpecNameIsSymbol determines if the given JSPropertySpec::name or JSFunctionSpec::name value is actually a symbol code and not a string, and returns true if so.
64	JS::PropertySpecNameToPermanentId	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::PropertySpecNameToPermanentId creates a jsid that does not need to be marked for GC from JSPropertySpec::name or JSFunctionSpec::name. The resulting jsid, on success, is either an interned string or a well-known symbol; either way it is immune to GC so there is no need to visit *idp during GC marking..
65	JS::ProtoKeyToId	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ProtoKeyToId converts a specified JS prototype key key, to a JS ID. JS::ProtoKeyToId stores a jsid to *idp.
66	JS::Remove*Root	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		JS::Remove*Root removes the variable that rp points to from the garbage collector's root set.
67	JS::Rooted	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Here, ptr represents the private member of JS::Rooted<T>, typed with T.
68	JS::SetLargeAllocationFailureCallback	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		If a large allocation fails when calling pod_{calloc,realloc}CanGC, the JS engine may call the large-allocation- failure callback, if set, to allow the embedding to flush caches, possibly perform shrinking GCs, etc. to make some room. The allocation will then be retried (and may still fail.)
69	JS::SetOutOfMemoryCallback	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Unlike the error reporter, which is only called if the exception for an OOM bubbles up and is not caught, the JS::OutOfMemoryCallback is called immediately at the OOM site to allow the embedding to capture the current state of heap allocation before anything is freed. If the large-allocation-failure callback is called at all (not all allocation sites call the large-allocation-failure callback on failure), it is called before the out-of-memory callback; the out-of-memory callback is only called if the allocation still fails after the large-allocation-failure callback has returned.
70	JS::SourceBufferHolder	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::SourceBufferHolder is the container class for passing in script source buffers to the JS engine. This not only groups the buffer and length values, it also provides a way to optionally pass ownership of the buffer to the JS engine without copying. Rules for use:
71	JS::StringValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
72	JS::SymbolValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
73	JS::ToBoolean	JSAPI Reference, SpiderMonkey
		JS::ToBoolean converts a JavaScript value to a boolean. It implements the ToBoolean operation described in ECMA 262-3 §9.2. This function can not fail and the return value is always the boolean conversion of the argument.
74	JS::ToInt32	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToInt32 converts a JavaScript value to a signed 32bit integer. It implements the ToInt32 operator described in ECMA 262-3 §9.5.
75	JS::ToInt64	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToInt64 converts a JavaScript value to a signed 64bit integer.
76	JS::ToNumber	JSAPI Reference, SpiderMonkey
		JS::ToNumber converts a JavaScript value to a number. It implements the ToNumber operator described in ECMA 262-3 §9.3.
77	JS::ToPrimitive	JSAPI Reference, SpiderMonkey
		JS::ToPrimitive converts a JavaScript object, obj, to a primitive value using ECMAScript 6 ToPrimitive.
78	JS::ToString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToString returns a string representation of a JavaScript value.
79	JS::ToUint16	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToInt16 converts a JavaScript value to an unsigned 16bit integer. It implements the ToInt16 operator described in ECMA 262-3 §9.7.
80	JS::ToUint32	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToInt32 converts a JavaScript value to an unsigned 32bit integer. It implements the ToInt32 operator described in ECMA 262-3 §9.6.
81	JS::ToUint64	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::ToInt64 converts a JavaScript value to an unsigned 64bit integer.
82	JS::TrueHandleValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::TrueHandleValue and JS::FalseHandleValue are JS::HandleValue constants that represent the JavaScript values true and false.
83	JS::TrueValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
84	JS::UndefinedHandleValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::UndefinedHandleValue is a JS::HandleValue constant that represents the JavaScript value undefined.
85	JS::UndefinedValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Editorial review completed.
86	JS::Value	JSAPI Reference, SpiderMonkey
		A C++ variable of type JS::Value represents a value in JavaScript: a string, number, object (including arrays and functions), boolean, symbol, null, or undefined.
87	JSAutoByteString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSAutoByteString takes the ownership of string and frees it in destructor.
88	JSAutoCompartment	JSAPI Reference, SpiderMonkey
		No summary!
89	JSBool	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
90	JSCheckAccessOp	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		Check whether obj[id] may be accessed per mode, returning JS_FALSE on error/exception, JS_TRUE on success with obj[id]'s stored value in *vp. As for JSPropertyOp, id is either a string or an int jsval.
91	JSClass	JSAPI Reference, SpiderMonkey
		Use JSClass to define a custom class of JavaScript objects. A JSClass has a name, flags, and several callback functions for advanced customization of object behavior.
92	JSClass.call	JSAPI Reference, SpiderMonkey
		Note that when a custom object is called, a this argument is calculated for it just as if it were a function. That is, the obj argument received by the JSNative is the this argument, not the custom object that was called!
93	JSClass.flags	JSAPI Reference, SpiderMonkey
		The flags field is of type uint32_t. Its value is the logical OR of zero or more of the following constants:
94	JSConstDoubleSpec	JSAPI Reference, SpiderMonkey
		JSConstDoubleSpecs is used to define a set of double values that are assigned as properties to an object using JS_DefineConstDoubles.
95	JSConvertOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSConvertOp callback specifies conversion behavior for objects having this class, implementing the ECMAScript [[DefaultValue]] behavior for them. On success it must return a primitive value in *vp.
96	JSDeletePropertyOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSDeletePropertyOp callback is a hook that applications may install to be called at some point during property access. A JSDeletePropertyOp may be installed on a JSClass to hook property deletes.
97	JSEnumerateOp	JSAPI Reference, SpiderMonkey
		JSEnumerateOp is called just before an object is enumerated (via a for...in statement, an array comprehension, or a call to JS_Enumerate). It should define any remaining lazy properties that should be enumerable but are not yet defined in obj. This hook does not implement iteration: once the properties are defined, the JavaScript engine can enumerate them.
98	JSErrorFormatString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSErrorFormatString is a struct to represent error message and type, returned by JS_ReportErrorNumber function.
99	JSErrorReport	JSAPI Reference, SpiderMonkey
		JSErrorReport describes a single error that occurs in the execution of script.
100	JSExceptionState	JSAPI Reference, SpiderMonkey
		A JSExceptionState object is returned by the JS_SaveExceptionState function, and is passed to functions JS_RestoreExceptionState and JS_DropExceptionState.
101	JSExnType	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		These types are part of a JSErrorFormatString structure. They define which error to throw in case of a runtime error. JSEXN_NONE marks an unthrowable error.
102	JSExtendedClass	JSAPI Reference, Obsolete, SpiderMonkey
		To implement a custom class that uses any of the JSExtendedClass callbacks:
103	JSExtendedClass.outerObject	JSAPI Reference, Obsolete, SpiderMonkey
		See split objects.
104	JSExtendedClass.wrappedObject	JSAPI Reference, Obsolete, SpiderMonkey
		If a class has the JSCLASS_IS_EXTENDED bit set in its JSClass.flags and has a non-null JSExtendedClass.wrappedObject, then objects of that class may be wrappers. In a few cases the JavaScript engine will pretend the wrapper isn't there, instead operating on the object it wraps. In these cases the engine calls the JSExtendedClass.wrappedObject callback to get the wrapped object. Most classes do not implement wrappedObject.
105	JSFUN_BOUND_METHOD	JSAPI Reference, Obsolete, SpiderMonkey
		This macro exists only for backward compatibility with existing applications. Its use is deprecated. Future versions of the JavaScript engine may not support or recognize this macro.
106	JSFUN_GLOBAL_PARENT	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
107	JSFastNative	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
108	JSFinalizeOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		The JSFinalizeOp is analogous to Java finalizers or C++ destructors. The garbage collector calls this callback for each object it collects. The finalizer's job is to clean up any resources allocated by the instance which wouldn't normally be cleaned up by the garbage collector (private data stored in the object by the application, file handles, etc.)
109	JSFreeOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Various finalization API takes not JSContext * but rather either JSFreeOp structure or its library-private counterpart FreeOp. These structures wrap parameters that are passed to the finalizers removing most of explicit dependencies on JSContext in the finalization code.
110	JSFunction	API, Guide, JSAPI, NeedsContent, SpiderMonkey
		JSFunction is a type in the JSAPI. The APIs JS_NewFunction, JS_DefineFunction, JS_CompileFunction, and their Unicode equivalents return values of type JSFunction *.
111	JSFunctionSpec	JSAPI Reference, SpiderMonkey
		JSFunctionSpec defines the attributes for a single JS function to associate with an object. An application typically has an array of JSFunctionSpec to define all the functions for an object and calls JS_DefineFunctions or JS_InitClass to create the functions and assign them to an object.
112	JSGetObjectOps	JSAPI Reference, Obsolete, SpiderMonkey
		JSObjectOps is used by JS_NewObject's internals to discover the set of high-level object operations to use for new objects of the given class. All native objects have a JSClass, which is stored as a private (int-tagged) pointer in object slots. In contrast, all native and host objects have a JSObjectMap at obj->map, which may be shared among a number of objects, and which contains the JSObjectOps *ops pointer used to dispatch object operations from API calls.
113	JSHasInstanceOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSHasInstanceOp is called to check whether v is an instance of obj. Return false on error or exception, true on success with true in *bp if v is an instance of obj, false in *bp otherwise.
114	JSID_EMPTY	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_EMPTY is an internal jsid value which is used in type inference code.
115	JSID_IS_EMPTY	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_EMPTY tests whether a specified JS ID, id, is JSID_EMPTY.
116	JSID_IS_GCTHING	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_GCTHING tests whether a specified JS ID, id, is a GC thing, and returns true if it's a GC thing.
117	JSID_IS_INT	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_INT tests whether a specified JS ID, id, is an integer, and returns true if it's an integer.
118	JSID_IS_STRING	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_STRING tests whether a specified JS ID, id, is a string, and returns true if it's a string.
119	JSID_IS_SYMBOL	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_SYMBOL tests whether a specified JS ID, id, is a JS Symbol, and returns true if it's a JS Symbol.
120	JSID_IS_VOID	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_VOID tests whether a specified JS ID, id, is JSID_VOID.
121	JSID_IS_ZERO	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_IS_ZERO tests whether a specified JS ID, id, is zero (0 in its integer representation).
122	JSID_VOID	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSID_VOID does not occur in JS scripts but may be used to indicate the absence of a valid jsid. A void jsid is not a valid id and only arises as an exceptional API return value, such as in JS_NextProperty. Embeddings must not pass JSID_VOID into JSAPI entry points expecting a jsid and do not need to handle JSID_VOID in hooks receiving a jsid except when explicitly noted in the API contract.
123	JSIdArray	JSAPI Reference, SpiderMonkey
		JSIdArray is used to hold IDs for enumerated properties associated with an object.
124	JSIteratorOp	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		The JavaScript engine calls the JSExtendedClass.iteratorObject callback to create an iterator object for a given object. The callback should return an iterator object or NULL if an error or exception occurred on cx.
125	JSMarkOp	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		Call JS_MarkGCThing for each GC thing directly reachable from obj. Use JSVAL_IS_GCTHING to check whether a value needs to be marked and JSVAL_TO_GCTHING to convert the jsval to a pointer.
126	JSNative	JSAPI Reference, SpiderMonkey
		JSNative is the type of native implementations of JavaScript functions.  Full documentation of how to define a JSNative (or a JSFastNative, the equivalent typedef which preceded it) is available in the API header "js/CallArgs.h" Added in SpiderMonkey 24.  This header is new, but the semantics it describes are applicable to all recent SpiderMonkey releases.  The preferred way to implement a function is to use the JS::CallArgs structure defined there; the macros providing equivalent functionality are deprecated.
127	JSNewEnumerateOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		From SpiderMonkey 38, JSNewEnumerateOp is the type of ObjectOps::enumerate. This callback overrides a portion of SpiderMonkey's default [[Enumerate]] internal method. When an ordinary object is enumerated, that object and each object on its prototype chain is tested for an enumerate op, and those ops are called in order. The properties each op adds to the properties vector are added to the set of values the for-in loop will iterate over. All of this is nonstandard.
128	JSNewResolveOp	JSAPI Reference, Obsolete, SpiderMonkey
		Like JSResolveOp, but flags provide contextual information about the property access.
129	JSObject	JSAPI Reference, SpiderMonkey
		Objects are made up of the following parts:
130	JSObjectOp	JSAPI Reference, Obsolete, SpiderMonkey
		The callbacks of this type are:
131	JSObjectOps.defaultValue	JSAPI Reference, Obsolete, SpiderMonkey
		The JSObjectOps.defaultValue callback corresponds to the [[DefaultValue]] method defined in ECMA 262-3 §8.6.2.6. Many expressions in the ECMAScript language, such as a+b, involve implicit conversion of the operands using [[DefaultValue]].
132	JSObjectOps.defineProperty	JSAPI Reference, Obsolete, SpiderMonkey
		Define obj[id], an own property of obj named id, having the given initial value, with the specified getter, setter, and attributes.
133	JSObjectOps.destroyObjectMap	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
134	JSObjectOps.dropProperty	JSAPI Reference, Obsolete, SpiderMonkey
		The following contract governs JSObjectOps callers and implementations:
135	JSObjectOps.enumerate	JSAPI Reference, Obsolete, SpiderMonkey
		For native objects, the enumerate callback first checks the JSCLASS_NEW_ENUMERATE flag of the object's class. If the flag is present, enumerate simply delegates the call to JSClass.enumerate.
136	JSObjectOps.getAttributes	JSAPI Reference, Obsolete, SpiderMonkey
		Get or set attributes of the property obj[id]. Returns JS_FALSE on error or exception, else JS_TRUE with current attributes in *attrsp. If prop is non-null, it must come from the *propp out parameter of a prior JSObjectOps.defineProperty or JSObjectOps.lookupProperty call.
137	JSObjectOps.getProperty	JSAPI Reference, Obsolete, SpiderMonkey
		Get, set, or delete obj[id], returning JS_FALSE on error or exception, JS_TRUE on success. If getting or setting, the new value is returned in *vp on success.
138	JSObjectOps.getRequiredSlot	JSAPI Reference, Obsolete, SpiderMonkey
		Get and set a required slot, one that should already have been allocated. These operations are infallible, so required slots must be pre-allocated, or implementations must suppress out-of-memory errors. The native ops (js_ObjectOps, see js/src/jsobj.c) access slots reserved by including a call to the JSCLASS_HAS_RESERVED_SLOTS(n) macro in the JSClass.flags initializer.
139	JSObjectOps.lookupProperty	JSAPI Reference, Obsolete, SpiderMonkey
		Look for id in obj and its prototype chain, returning JS_FALSE on error or exception, JS_TRUE on success. On success, return null in *propp if id was not found. If id was found, return the first object searching from obj along its prototype chain in which id names a direct property in *objp, and return a non-null, opaque property pointer in *propp.
140	JSObjectOps.newObjectMap	JSAPI Reference, Obsolete, SpiderMonkey
		Create a new instance of (a concrete subclass of) JSObjectMap (see jsobj.h), with the nrefs and ops members initialized from the same-named parameters, and with the nslots and freeslot members initialized according to ops and clasp. Return null on error, non-null on success.
141	JSObjectOps.setProto	JSAPI Reference, Obsolete, SpiderMonkey
		These hooks must check for cycles without deadlocking, and otherwise take special steps. See js_SetPrototype or js_SetParent in js/src/jsobj.c for an example.
142	JSObjectPrincipalsFinder	JSAPI Reference, Obsolete, SpiderMonkey
		The JavaScript engine calls this callback to obtain principals for a JSPrincipals.subsume check.
143	JSPRINCIPALS_HOLD	JSAPI Reference, Obsolete, SpiderMonkey
		JSPRINCIPALS_HOLD and JSPRINCIPALS_DROP are used to manage memory for JSPrincipals objects.
144	JSPrincipals	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSPrincipals is the abstract base class of all principals objects, the objects that identify the source of a function or script and are used to determine its privileges. A principals object is like a Java CodeSource.
145	JSPrincipalsTranscoder
		JSPrincipalsTranscoder is the type of a security callback that can be configured using JS_SetPrincipalsTranscoderJSAPI 1.8 and earlier or JS_SetRuntimeSecurityCallbacksAdded in SpiderMonkey 1.8.1.
146	JSProperty	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		JSProperty is the abstract base class of all object properties. It is used internally in JSObjectOps.lookupProperty, getAttributes, setAttributes, and dropProperty.
147	JSPropertyDescriptor	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		The JSPropertyDescriptor holds the object that has the property, attributes of the property, getter and setter operations, and the value.
148	JSPropertyOp	JSAPI Reference, SpiderMonkey
		They are also the types of the JSClass.addProperty, getProperty, and setProperty callbacks, which are called during object property accesses.
149	JSPropertySpec	JSAPI Reference, SpiderMonkey
		JSPropertySpec defines the attributes for a single JS property to associate with an object. Pass to JS_DefineProperties or JS_InitClass to create the properties and assign them to an object.
150	JSProtoKey	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Each of these types corresponds to standard objects in JavaScript. Some of them are Nightly only (depends on each option).
151	JSReserveSlotsOp	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		JSClass offers the following hook:
152	JSResolveOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSResolveOp callback is a hook which is called when a property is not found on an object.
153	JSRuntime	JSAPI Reference, NeedsContent, NeedsUpdate, SpiderMonkey
		In the JSAPI, JSRuntime is the top-level object that represents an instance of the JavaScript engine. A program typically has only one JSRuntime, even if it has many threads. The JSRuntime is the universe in which JavaScript objects live; they can't travel to other JSRuntimes.
154	JSSecurityCallbacks.contentSecurityPolicyAllows
		Editorial review completed.
155	JSString	JSAPI Reference, NeedsContent, SpiderMonkey
		Conceptually, a JavaScript string is just an array of char16_t characters and a length. You should not rely on the structure of JSString, because it is subject to change; instead, treat JSString objects as opaque.
156	JSStringFinalizer	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSStringFinalizer::finalize finalizes external strings created by JS_NewExternalString.
157	JSTraceOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JSTraceOp is the function type for trace operation of the class called to enumerate all traceable things reachable from obj's private data structure. For each such thing, a trace implementation must call one of the JS_Call*Tracer variants on the thing.
158	JSType	JSAPI Reference, SpiderMonkey
		No summary!
159	JSVAL_IS_BOOLEAN	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_BOOLEAN(v) is true if the given JavaScript value, v, is a boolean value (that is, it is either JSVAL_TRUE or JSVAL_FALSE).
160	JSVAL_IS_DOUBLE	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_DOUBLE(v) is true if v is a number represented in memory as a jsdouble.
161	JSVAL_IS_GCTHING	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_GCTHING(v) is true if the jsval v is either JSVAL_NULL or a reference to a value that is subject to garbage collection. JavaScript performs automatic garbage collection of objects, strings, and doubles.
162	JSVAL_IS_INT	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_INT(v) is true if the jsval v is a number represented in memory as an integer.
163	JSVAL_IS_NULL	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_NULL(v) is true if v is JSVAL_NULL, which is the JavaScript null value.
164	JSVAL_IS_NUMBER	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_NUMBER(v) is true if v is a JavaScript number.
165	JSVAL_IS_OBJECT	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_OBJECT(v) returns true if v is either an object or JSVAL_NULL. This indicates that it is safe to call JSVAL_TO_OBJECT(v) to convert v to type JSObject *. If v is a string, number, boolean, or undefined, the result is false.
166	JSVAL_IS_PRIMITIVE	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_PRIMITIVE(v) is true if v is undefined, null, a boolean, a number, or a string. Otherwise it is false, and v is an object.
167	JSVAL_IS_STRING	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_STRING(v) is true if v is a string.
168	JSVAL_IS_VOID	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_IS_VOID(v) is true if v is JSVAL_VOID, which represents the JavaScript value undefined.
169	JSVAL_LOCK	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_LOCK is a deprecated feature that is supported only for backward compatibility with existing applications. To lock a value, use local roots with JS_AddRoot.
170	JSVAL_NULL	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_NULL is a jsval constant that represents the JavaScript value null. It is equivalent to OBJECT_TO_JSVAL(NULL).
171	JSVAL_ONE	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_ONE is equivalent to INT_TO_JSVAL(1).
172	JSVAL_TO_BOOLEAN	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_BOOLEAN casts the value v to a C integer, either 0 or 1. As a precondition, JSVAL_IS_BOOLEAN(v) must be true. That is, v must be either JSVAL_TRUE or JSVAL_FALSE. Otherwise the behavior is undefined.
173	JSVAL_TO_DOUBLE	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_DOUBLE casts a specified JS value, v, to a C floating-point number of type jsdouble. As a precondition, JSVAL_IS_DOUBLE(v) must be true. This function is not type-safe: if v is an integer, string, null, or anything else, the behavior is undefined.
174	JSVAL_TO_GCTHING	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_GCTHING casts a jsval, v, to a raw pointer. The type of the result is void *.
175	JSVAL_TO_INT	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_INT converts a specified integer jsval, v, to the corresponding C integer value. If v is any other type of value, the result is unspecified.
176	JSVAL_TO_OBJECT	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_OBJECT casts the argument, v, to type JSObject *. As a precondition, JSVAL_IS_OBJECT(v) must be true. That is, v must be either a reference to an object or JSVAL_NULL. This function is not type-safe: if v is not an object or JSVAL_NULL, the behavior is undefined.
177	JSVAL_TO_STRING	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TO_STRING casts the argument, v, to type JSString *. As a precondition, JSVAL_IS_STRING(v) must be true. This function is not type-safe: if v is not a string, the behavior is undefined.
178	JSVAL_TRUE	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_TRUE and JSVAL_FALSE are jsval constants that represent the JavaScript boolean values, true and false. They are equivalent to BOOLEAN_TO_JSVAL(true) and BOOLEAN_TO_JSVAL(false), respectively.
179	JSVAL_UNLOCK	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_UNLOCK is a deprecated feature that is supported only for backward compatibility with existing applications. To unlock a value, use local roots with JS_RemoveRoot.
180	JSVAL_VOID	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_VOID is a jsval constant that represents the JavaScript value undefined.
181	JSVAL_ZERO	JSAPI Reference, Obsolete, SpiderMonkey
		JSVAL_ZERO is equivalent to INT_TO_JSVAL(0).
182	JSVersion	JSAPI Reference, SpiderMonkey
		The JSVersion enumerated type includes the following values. Each version has a name, which is a string used by JS_StringToVersion and JS_VersionToString.
183	JSXDRObjectOp	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		Serialize or deserialize an object, given an XDR state record representing external data. See jsxdrapi.h.
184	JS_ASSERT_STRING_IS_FLAT	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ASSERT_STRING_IS_FLAT asserts the string is flattened, and returns a pointer to JSFlatString.
185	JS_Add*Root	JSAPI Reference, Obsolete, SpiderMonkey
		These functions are obsoleted, use JS::PersistentRooted instead.
186	JS_AddArgumentFormatter	JSAPI Reference, Obsolete, SpiderMonkey
		JS_AddArgumentFormatter establishes formatter as the conversion function for format strings beginning with format in the context cx. On success, it returns JS_TRUE. Otherwise it returns JS_FALSE. (At the moment, JS_AddArgumentFormatter fails only if there is no memory available to record the registration.)
187	JS_AddExternalStringFinalizer	JSAPI Reference, Obsolete, SpiderMonkey
		Add a finalizer for external strings created by JS_NewExternalString using a type-code returned from this function, and that understands how to free or release the memory pointed at by JS_GetStringChars(str).
188	JS_AddFinalizeCallback	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_AddFinalizeCallback add a callback function which the garbage collector calls at several points during garbage collection. rt is the runtime in which you specify the callback. cb is a pointer to the callback function to add.
189	JS_AliasElement	JSAPI Reference, Obsolete, SpiderMonkey
		JS_AliasElement assigns an alternate index number for an element or numeric property associated with a native object. obj is the object to which the element belongs. name is the element's current index in the object, and alias is the alternate index to assign to the element.
190	JS_AliasProperty	JSAPI Reference, Obsolete, SpiderMonkey
		JS_AliasProperty assigns an alternate name for a property associated with a native object. obj is the object to which the property belongs. name is the property's current name in the object, and alias is the alternate name to assign to the property.
191	JS_AlreadyHasOwnProperty	JSAPI Reference, SpiderMonkey
		These functions attempt to determine whether a property already exists on a specific JSObject without modifying the object. By design, this search may not find a property that other property lookup functions, such as JS_LookupProperty, would find.
192	JS_BeginRequest	JSAPI Reference, SpiderMonkey
		Indicates to the JS engine that the calling thread is entering a region of code that may call into the JSAPI but does not block.
193	JS_BindCallable	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_BindCallable binds the given callable to use the given object as this.
194	JS_BufferIsCompilableUnit	JSAPI Reference, SpiderMonkey
		Given a buffer, return false if the buffer might become a valid JavaScript statement with the addition of more lines. Otherwise return true. The intent is to support interactive compilation - accumulate lines in a buffer until JS_BufferIsCompilableUnit is true, then pass it to the compiler.
195	JS_CStringsAreUTF8	JSAPI Reference, Obsolete, SpiderMonkey
		By default, all C/C++ strings passed into the JSAPI are treated as ISO/IEC 8859-1, also known as ISO-Latin-1. That is, each byte is treated as a Unicode character, and there is no way to pass in a string containing characters beyond U+00FF.
196	JS_CallFunction	JSAPI Reference, SpiderMonkey
		Calls a specified JS function.
197	JS_CheckAccess	JSAPI Reference, SpiderMonkey
		Check whether a running script may access a given object property.
198	JS_CheckForInterrupt	JSAPI_Reference, Reference, Référence(2), SpiderMonkey
		JS_CheckForInterrupt checks for the interrupt, and handle it if it's pending. JS_CheckForInterrupt returns false if interrupt callback returns false.
199	JS_ClearContextThread	JSAPI Reference, SpiderMonkey
		Transfer a JSContext from one thread to another.
200	JS_ClearDateCaches	Date, JSAPI Reference, JavaScript, Reference, Référence(2), SpiderMonkey
		JS_ClearDateCaches clears the cache of calculated local time from each Date object. Call to propagate a system timezone change.
201	JS_ClearNewbornRoots	JSAPI Reference, SpiderMonkey
		The last GC thing of each type (object, string, double, external string types) created on a given context is kept alive until another thing of the same type is created, using a newborn root in the context. These newborn roots help native code protect newly-created GC-things from GC invocations activated before those things can be rooted using local or global roots.
202	JS_ClearNonGlobalObject	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ClearNonGlobalObject removes all of obj's own properties, except the special __proto__ and __parent__ properties, in a single operation. Properties belonging to objects on obj's prototype chain are not affected.
203	JS_ClearPendingException	JSAPI Reference, SpiderMonkey
		JS_ClearPendingException cancels the currently pending exception in cx, if any. (There is a pending exception if the most recently thrown exception in cx has not yet been caught or cleared.)
204	JS_ClearRegExpStatics	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ClearRegExpStatics clears the pending input string and flags of the built-in RegExp object.
205	JS_ClearScope	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ClearScope removes all of obj's own properties, except the special __proto__ and __parent__ properties, in a single operation. Properties belonging to objects on obj's prototype chain are not affected.
206	JS_CloneFunctionObject	JSAPI Reference, SpiderMonkey
		JS_CloneFunctionObject creates a new function object from funobj. The new object has the same code and argument list as funobj, but uses parent as its enclosing scope. This can be helpful if funobj is an extant function that you wish to use as if it were enclosed by a newly-created global object.
207	JS_CompareStrings	JSAPI Reference, SpiderMonkey
		JS_CompareStrings compares two JS strings, str1 and str2. If the strings are identical in content and length, JS_CompareStrings stores 0 in *result. If str1 is less than str2, *result is less than 0. If str1 is greater than str2, *result is greater than 0.
208	JS_CompileFileHandleForPrincipals	JSAPI Reference, NeedsContent, Obsolete, SpiderMonkey
		Please provide a description of this function.
209	JS_CompileFileHandleForPrincipalsVersion	JSAPI Reference, NeedsContent, Obsolete, SpiderMonkey
		Please provide a description for this function.
210	JS_CompileFunction	JSAPI Reference, SpiderMonkey
		JS_CompileFunction compiles a function from a text string, bytes, and optionally associates it with a JS object, obj. JS_CompileUCFunction is the Unicode version of the function.
211	JS_CompileFunctionForPrincipals	JSAPI Reference, Obsolete, SpiderMonkey
		JS_CompileFunctionForPrincipals compiles a security-enabled function from a text string, bytes, and associates it with a JS object, obj. JS_CompileUCFunctionForPrincipals is the Unicode version of the function.
212	JS_CompileScript	JSAPI Reference, SpiderMonkey
		JS_CompileScript compiles a script, source, for execution. JS_CompileUCScript is the Unicode version of the function.
213	JS_CompileScriptForPrincipals	JSAPI Reference, Obsolete, SpiderMonkey
		JS_CompileScriptForPrincipals compiles a security-enabled script, src, for execution. JS_CompileUCScriptForPrincipals is the Unicode version of the function. The script is associated with a JS object.
214	JS_CompileUCFunctionForPrincipalsVersion	JSAPI Reference, NeedsContent, Obsolete, SpiderMonkey
		Please provide a description for this function.
215	JS_CompileUTF8File	JSAPI Reference, Obsolete, SpiderMonkey
		JS_CompileUTF8File compiles the text of script in an external file location for execution by the JS engine. filename is the name of the file containing the script to compile.
216	JS_CompileUTF8FileHandle	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
217	JS_ConcatStrings	JSAPI, JSAPI Reference, SpiderMonkey
		JS_ConcatStrings concatenates two JS strings, str1 and str2, and returns the result. The result could be the same as one of the input strings, if the other string is zero length. When the string concatenation fails NULL is returned.
218	JS_ConstructObject	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ConstructObject creates a new object of the specified class, with the specified prototype and parent, then invokes a constructor function to initialize the new object. cx is a pointer to a context associated with the runtime in which to create the new object. clasp is a pointer to the class of object to create. proto and parent may specify objects to be used as the new object's prototype and parent. If either is NULL, the engine tries to find reasonable defaults.
219	JS_ContextIterator	JSAPI Reference, SpiderMonkey
		JS_ContextIterator steps through the set of contexts associated with the runtime rt. Each call to JS_ContextIterator returns the next context in the cycle.
220	JS_ConvertArguments	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ConvertArguments provides a convenient way to translate a series of JS values into their corresponding JS types with a single function call. It saves you from having to write separate tests and elaborate if...else statements in your function code to retrieve and translate multiple JS values for use with your own functions.
221	JS_ConvertArgumentsVA	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ConvertArgumentsVA is to JS_ConvertArguments as vprintf is to printf. See JS_ConvertArguments for further information.
222	JS_ConvertValue	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ConvertValue converts a JavaScript value, v, to the specified type. On success, the converted value is stored in *vp. Typically users of this function set vp to point to v, so that if conversion is successful, v now contains the converted value.
223	JS_DecompileFunction	JSAPI Reference, SpiderMonkey
		JS_DecompileFunction generates the complete source code of a function declaration from a function's compiled form, fun.
224	JS_DecompileFunctionBody	JSAPI Reference, SpiderMonkey
		JS_DecompileFunctionBody generates the source code of a function's body, minus the function keyword, name, parameters, and braces, from a function's compiled form, fun.
225	JS_DecompileScript	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_DecompileScript returns the source code of script. If script is a function, it calls JS_DecompileFunction. Otherwise, it returns the original source code of the script. If the script is not cached, it tries to load the source from file, and returns nullptr if an error happened while loading.
226	JS_DecompileScriptObject	JSAPI Reference, NeedsContent, SpiderMonkey
		FIXME: Please provide a description for this function.
227	JS_DeepFreezeObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_DeepFreezeObject freezes obj, and all objects it refers to, recursively. This will not recurse through non-extensible objects, on the assumption that those are already deep-frozen.
228	JS_DefaultValue	JSAPI Reference, SpiderMonkey
		Renamed to JS::ToPrimitive from JSAPI 44.
229	JS_DefineConstDoubles	JSAPI Reference, SpiderMonkey
		JS_DefineConstDoubles creates one or more properties for a specified object, obj, where each property consists of a double value.
230	JS_DefineElement	JSAPI Reference, SpiderMonkey
		JS_DefineElement defines a numeric property for a specified object, obj.
231	JS_DefineFunction	JSAPI Reference, SpiderMonkey
		JS_DefineFunction exposes a C/C++ function to scripts by defining a new method on an existing JavaScript object. It creates the new Function object as though by calling JS_NewFunction, then makes it a method of obj as though by calling JS_DefineProperty. JS_DefineUCFunction is the Unicode version of the function.
232	JS_DefineFunctions	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_DefineFunctions creates zero or more functions and makes them properties (methods) of a specified object, obj, as if by calling JS_DefineFunction repeatedly.
233	JS_DefineObject	JSAPI Reference, SpiderMonkey
		JS_DefineObject creates a new object of the class clasp and assigns it to a new property of an existing object, obj. name is the property name to assign to obj to hold the new object, and flags contains the property attributes to set for the newly created property.
234	JS_DefineOwnProperty	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DefineOwnProperty implements the ECMAScript defined function Object.defineProperty. So the same restrictions apply as for that function (e.g. it is not possible to change a non-configurable property).
235	JS_DefineProperties	JSAPI Reference, SpiderMonkey
		JS_DefineProperties creates properties on a specified object, obj.
236	JS_DefineProperty	JSAPI Reference, SpiderMonkey
		JS_DefineProperty defines a single property in a specified object, obj. JS_DefineUCProperty is the Unicode version of the function. JS_DefinePropertyById is the same but takes a JS::HandleId for the property name.
237	JS_DefinePropertyWithTinyId	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DefinePropertyWithTinyId defines an object property with a tiny id. JS_DefineUCPropertyWithTinyId is the Unicode version of the function. Except for the tinyid parameter, these functions behave exactly as JS_DefineProperty and JS_DefineUCProperty. See those functions for more details.
238	JS_DeleteElement	JSAPI Reference, SpiderMonkey
		JS_DeleteElement removes a specified element or numeric property, index, from an object, obj. If an object references an element belonging to a prototype, the element reference is removed from the object, but the prototype's element is not deleted. If deletion is successful, JS_DeleteElement returns true. Otherwise it returns false.
239	JS_DeleteElement2	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DeleteElement2 removes a specified numeric property, index, from an object, obj. If obj inherits the specified property from a prototype, the property is removed from the object, but not from the prototype. If deletion is successful, JS_DeleteElement2 stores true to *succeeded and returns true. Otherwise it returns false and the value of *succeeded is undefined.
240	JS_DeleteProperty	JSAPI Reference, SpiderMonkey
		JS_DeleteProperty removes a specified property, name, from an object, obj. JS_DeletePropertyById is the same but takes a jsid for the property name. These functions are identical to JS_DeleteProperty2 and JS_DeletePropertyById2 except that they do not have an out parameter.
241	JS_DeleteProperty2	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DeleteProperty2 removes a specified property, name, from an object, obj, and stores true or false in *succeeded. It behaves like the JavaScript expression delete obj[name]. JS_DeleteUCProperty2 is the Unicode version of the function. JS_DeletePropertyById2 is the same but takes a JS::HandleId for the property name.
242	JS_DestroyContext	JSAPI Reference, SpiderMonkey
		These functions destroy a context, cx. JS_DestroyContext additionally performs garbage collection to reclaim any memory that was being used by cx's global object. JS_DestroyContextNoGC does not perform garbage collection. JS_DestroyContextMaybeGC may or may not perform garbage collection; the engine makes an educated guess as to whether enough memory would be reclaimed to justify the work.
243	JS_DestroyIdArray	JSAPI Reference, SpiderMonkey
		JS_DestroyIdArray frees the ID array pointed to by ida.
244	JS_DestroyRuntime	JSAPI Reference, SpiderMonkey
		JS_DestroyRuntime frees the specified the JavaScript runtime environment, rt. Call JS_DestroyRuntime after completing all other JS API calls. JS_DestroyRuntime garbage collects and frees the memory previously allocated by JS_NewRuntime.
245	JS_DestroyScript	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DestroyScript destroys the given compiled script, freeing the memory allocated to it. The script must not be currently executing (in any context, at any level of the stack) and must not be used again afterwards.
246	JS_DoubleIsInt32	JSAPI Reference, SpiderMonkey
		JS_DoubleIsInt32 returns true if d i sequal to *ip.
247	JS_DoubleToInt32	JSAPI Reference, Obsolete, SpiderMonkey
		JS_DoubleToInt32 converts a C floating-point number of type double to int32, a signed 32-bit integer.
248	JS_DropExceptionState	JSAPI Reference, SpiderMonkey
		This function destroys the specified JSExceptionState object, unrooting as necessary any attached exception object and freeing the memory resources associated with the JSExceptionState object.
249	JS_DumpHeap	JSAPI Reference, Obsolete, SpiderMonkey
		See bug 378261 for detail.
250	JS_DumpNamedRoots	JSAPI Reference, Obsolete, SpiderMonkey
		Each call to JS_AddNamedRoot creates a record in a table of named roots maintained by the garbage collector. JS_DumpNamedRoots provides a way for the application to access the contents of that table. It calls the dump function once for each named root in the given runtime rt. In pseudocode:
251	JS_EncodeCharacters	JSAPI Reference, Obsolete, SpiderMonkey
		JS_EncodeCharacters copies the characters of a jschar array into a char array, converting the 16-bit values to 8-bit values. If SpiderMonkey was built with JS_C_STRINGS_ARE_UTF8 defined or JS_SetCStringsAreUTF8 was called, the string is converted to UTF-8.  Otherwise each character is simply truncated to 8 bits.
252	JS_EncodeString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_EncodeString and JS_EncodeStringToUTF8 convert the specified JavaScript str to a C string (an array of 8-bit chars).
253	JS_EncodeStringToBuffer	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_EncodeStringToBuffer converts the specified JavaScript str to a C string (an array of 8-bit chars) and fills the specified buffer with up to length bytes of the string. It returns the length of the whole string encoding or (size_t)-1 if the string can't be encoded as bytes. If the returned value is greater than the length you specified, the string was truncated.
254	JS_EnterCompartment	JSAPI Reference, SpiderMonkey
		No summary!
255	JS_EnterCrossCompartmentCall	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
256	JS_EnterLocalRootScope	JSAPI Reference, Obsolete, SpiderMonkey
		Scoped local root management allows native functions, getter/setters, etc. to avoid calling JS_AddRoot and JS_RemoveRoot to manage global roots temporarily.
257	JS_Enumerate	JSAPI Reference, SpiderMonkey
		JS_Enumerate gets the ids of all own properties of the specified object, obj, that have the JSPROP_ENUMERATE attribute. (The term own property refers to a property that is not inherited from the object's prototype.) This is not quite the same behavior as a JavaScript for...in loop, which converts all property ids to strings and also enumerates inherited properties.
258	JS_EnumerateDiagnosticMemoryRegions	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_EnumerateDiagnosticMemoryRegions enumerates memory regions that contain diagnostic information intended to be included in crash report minidumps.
259	JS_EnumerateResolvedStandardClasses	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		JS_EnumerateResolvedStandardClasses enumerates any already-resolved standard class ids into ida, or into a new JSIdArray if ida is NULL. Return the augmented array on success, NULL on failure with ida (if it was non-null on entry) destroyed.
260	JS_EnumerateStandardClasses	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		The global object's class's enumerate op should call JS_EnumerateStandardClasses(cx, obj), to define eagerly during for...in loops any classes not yet resolved lazily.
261	JS_ErrorFromException	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		If obj is an exception object, the exception will have (or be able to lazily create) an error report struct, and JS_ErrorFromException will return the address of that struct. Otherwise, it returns nullptr. The lifetime of the error report struct that might be returned is the same as the lifetime of the exception object.
262	JS_EvaluateScript	JSAPI Reference, Obsolete, SpiderMonkey
		JS_EvaluateScript compiles and executes a script in the specified scope, obj. JS_EvaluateUCScript is the Unicode version of the function.
263	JS_EvaluateScriptForPrincipals	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
264	JS_ExecuteRegExp	JSAPI Reference, SpiderMonkey
		JS_ExecuteRegExp and JS_NewRegExpObjectNoStatics execute the RegExp object, reobj, to the specified input string, chars, from *indexp index.
265	JS_ExecuteScript	JSAPI Reference, SpiderMonkey
		JS_ExecuteScript executes a previously-compiled script, script.
266	JS_ExecuteScriptPart	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ExecuteScriptPart executes part of a previously compiled script, script. The part parameter must be either JSEXEC_PROLOG to execute the script prolog or JSEXEC_MAIN to execute the main section of the script.
267	JS_ExecuteScriptVersion	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ExecuteScript executes a previously-compiled script, script.
268	JS_FORGET_STRING_FLATNESS	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_FORGET_STRING_FLATNESS converts JSFlatString * to JSString *.
269	JS_FS	JSAPI Reference, SpiderMonkey
		Use these macros to define an array of JSFunctionSpecs to pass to JS_DefineFunctions or JS_InitClass.
270	JS_FileEscapedString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_FileEscapedString writes str into file fp escaping any non-printable or non-ASCII character. If quote is not 0, it must be a single or double quote character that will quote the output.
271	JS_Finish	JSAPI Reference, Obsolete, SpiderMonkey
		JS_Finish is obsolete. Use JS_DestroyRuntime instead.
272	JS_FlattenString	JSAPI, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_FlattenString flattens a string str and returns a pointer to JSFlatString.
273	JS_FlushCaches	JSAPI Reference, NeedsContent, SpiderMonkey
		.
274	JS_ForgetLocalRoot	JSAPI Reference, Obsolete, SpiderMonkey
		This function is used to interact with scoped local root management. See JS_EnterLocalRootScope for more on this topic.
275	JS_ForwardGetPropertyTo	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ForwardGetPropertyTo is the base implementation of JS_GetProperty, JS_GetUCProperty, JS_GetPropertyById etc, where onBehalfOf is same to obj.
276	JS_FreezeObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Freezes an object. This means that other code cannot delete, add or change any properties on the object. See ES5's Object.freeze method.
277	JS_GC	JSAPI Reference, SpiderMonkey
		JS_GC performs garbage collection of JS objects, strings and other internal data structures that are no longer reachable in the specified context or runtime. Garbage collection frees memory so that it can be reused by the system.
278	JS_GET_CLASS	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GET_CLASS returns a pointer to the JSClass associated with a specified JS object, obj. The application must treat the JSClass as read-only.
279	JS_GetArrayLength	JSAPI Reference, SpiderMonkey
		JS_GetArrayLength gets the .length property of obj as though by calling JS_GetProperty and converts it to a 32-bit unsigned integer. If obj is an array (see JS_IsArrayObject), this is guaranteed to succeed, because the .length property of an array is always a number and can't be deleted or redefined.
280	JS_GetArrayPrototype	JSAPI Reference, SpiderMonkey
		JS_GetArrayPrototype() retrieves the original Array.prototype of a specified object, obj.  If an error occurs, it returns NULL.
281	JS_GetClass	JSAPI Reference, SpiderMonkey
		JS_GetClass returns a pointer to the JSClass associated with a specified JS object, obj. The application must treat the JSClass as read-only. If obj has no JSClass, this returns NULL.
282	JS_GetClassObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetClassObject gets the builtin class costructor for the specified prototype key.
283	JS_GetClassPrototype	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetClassPrototype gets the builtin class costructor for the specified prototype key.
284	JS_GetCompartmentPrivate	JSAPI Reference, SpiderMonkey
		Please provide a description for this function.
285	JS_GetConstructor	JSAPI Reference, SpiderMonkey
		JS_GetConstructor retrieves the constructor property of a given object, obj. If the result is a Function object, JS_GetConstructor returns a pointer to that object. Otherwise, it reports an error and returns NULL.
286	JS_GetContextPrivate	JSAPI Reference, SpiderMonkey
		Each JSContext has two fields of type void * which the application may use for any purpose. They are especially useful for storing data needed by callbacks. JS_GetContextPrivate and JS_GetSecondContextPrivate get this field and JS_SetContextPrivate and JS_SetSecondContextPrivate set it. The field is initially NULL.
287	JS_GetContextThread	JSAPI Reference, SpiderMonkey
		Returns the ID of the associated thread for a context.
288	JS_GetDefaultFreeOp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetDefaultFreeOp returns default JSFreeOp for the runtime.
289	JS_GetElement	JSAPI Reference, SpiderMonkey
		JS_GetElement examines a specified JS object, obj, and its prototype chain, for an element or numeric property numbered index.
290	JS_GetEmptyString	JSAPI, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		The returned empty string has the length 0.
291	JS_GetEmptyStringValue	JSAPI Reference, SpiderMonkey
		JS_GetEmptyStringValue returns the empty string as a JS::Value.
292	JS_GetErrorPrototype	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetErrorPrototype returns the original value of Error.prototype from the global object of the current compartment of cx.
293	JS_GetExternalStringClosure	JSAPI, JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		To determine if a string was created as an external string, you can call JS_IsExternalString.
294	JS_GetExternalStringFinalizer	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetExternalStringFinalizer returns the fin parameter passed to JS_NewExternalString.
295	JS_GetFlatStringChars	JSAPI, JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		No summary!
296	JS_GetFunctionArity	JSAPI Reference, SpiderMonkey
		JS_GetFunctionArity returns the number of formal parameters of a function, fun. This is the same as the function object's arity property, if that property has not been overwritten. Specifically, if fun is a native function, the result is the value that was passed to the nargs parameter of JS_DefineFunction. Otherwise fun is implemented in JavaScript, and the result is the number of identifiers in its formal parameter list (see ECMA 262-3 §13).
297	JS_GetFunctionCallback	JSAPI Reference, Obsolete, SpiderMonkey
		Returns the callback currently configured to be called when JavaScript functions are invoked or exited, as established by a prior call to JS_SetFunctionCallback.
298	JS_GetFunctionFlags	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetFunctionFlags retrieves the function flags of a given JavaScript function, fun. These flags are for the JavaScript engine’s internal use. Most applications can’t do anything useful with them.
299	JS_GetFunctionId	JSAPI Reference, SpiderMonkey
		JS_GetFunctionId returns the name of a function, fun, as a JSString, or NULL if fun is unnamed. The returned string lives as long as fun, so you don't need to root a saved reference to it if fun is well-connected or rooted, and provided you bound the use of the saved reference by fun's lifetime.
300	JS_GetFunctionName	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetFunctionName retrieves the function name associated with a function pointer, fun. The return value is either the name of a function, or the string "anonymous", which indicates that the function was not assigned a name when created.
301	JS_GetFunctionObject	JSAPI Reference, SpiderMonkey
		JS_GetFunctionObject returns the JavaScript Function object for a specified function pointer, fun.
302	JS_GetFunctionPrototype	JSAPI Reference, SpiderMonkey
		JS_GetFunctionPrototype() retrieves the original Function.prototype of a specified object, obj.  If an error occurs, it returns NULL.
303	JS_GetFunctionScript	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetFunctionScript returns a pointer to JSScript for the specified function, fun. If fun is a native function, it returns NULL.
304	JS_GetGCParameter	JSAPI Reference, SpiderMonkey
		JS_GetGCParameter returns the current parameter of the garbage collection.
305	JS_GetGlobalForCompartmentOrNull	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetGlobalForCompartmentOrNull() returns the global object for the context and the compartment. This may return NULL if c never had a global (e.g., the atoms compartment), or if c's global has been collected.
306	JS_GetGlobalForObject	JSAPI Reference, SpiderMonkey
		JS_GetGlobalForObject returns the last non-null object on the parent chain of the input object.
307	JS_GetGlobalForObject3
		This page was auto-generated because a user created a sub-page to this page.
308	JS_GetGlobalForScopeChain	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetGlobalForScopeChain() returns the global object for whatever function is currently running on the context. In other words, it returns the global object on the current scope chain.
309	JS_GetGlobalObject	JSAPI Reference, Obsolete, SpiderMonkey
		This function is obsolete: use JS_GetGlobalForObject or JS_GetGlobalForScopeChain instead. The concept of a global object belonging to a context will likely be phased out in future versions of SpiderMonkey.
310	JS_GetImplementationVersion	JSAPI Reference, SpiderMonkey
		JS_GetImplementationVersion returns a hard-coded, English language string that specifies the version number of the JS engine currently in use, and its release date.
311	JS_GetInstancePrivate	JSAPI Reference, SpiderMonkey
		JS_GetInstancePrivate determines if a JavaScript object, obj, is an instance of a given JSClass, clasp, and if it is, returns a pointer to the object's private data. Otherwise it returns NULL.
312	JS_GetInternedStringChars	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetInternedStringChars returns a pointer to the interned string.
313	JS_GetLatin1FlatStringChars	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetLatin1FlatStringChars and JS_GetTwoByteFlatStringChars return a pointer to the string.
314	JS_GetLatin1InternedStringChars	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetLatin1InternedStringChars and JS_GetTwoByteInternedStringChars gets the characters of the string, str.
315	JS_GetLatin1StringCharsAndLength	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetLatin1StringCharsAndLength and JS_GetTwoByteStringCharsAndLength get the characters and the length of the string, str.
316	JS_GetLocaleCallbacks	JSAPI Reference, SpiderMonkey
		JS_SetLocaleCallbacks establishes locale callbacks. The pointer must persist as long as the JSRuntime. Passing nullptr restores the default behaviour.
317	JS_GetNaNValue	JSAPI Reference, SpiderMonkey
		JS_GetNaNValue returns a value of type JS::Value that represents an IEEE floating-point quiet Not-a-Number (NaN).
318	JS_GetObjectPrototype	JSAPI Reference, SpiderMonkey
		JS_GetObjectPrototype() retrieves the original Object.prototype of a specified object, obj.  If an error occurs, it returns NULL.
319	JS_GetObjectRuntime	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetObjectRuntime retrieves a pointer to the JSRuntime for a specified JSObject.
320	JS_GetOptions	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetOptions retrieves the option flags of a given JS context cx.
321	JS_GetOwnPropertyDescriptor	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetOwnPropertyDescriptor and JS_GetOwnPropertyDescriptorById get a detailed description of that property (returned in desc->obj). If desc->obj is null, then this property was not found on the prototype chain.
322	JS_GetParent	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetParent retrieves the parent object of obj, or NULL if obj does not have a parent.
323	JS_GetParentRuntime	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetParentRuntime retrieves a pointer to the parent JSRuntime of the runtime for a specified JSContext. If the cx's runtime has no parent runtime, JS_GetParentRuntime returns cx's runtime itself.
324	JS_GetPendingException	JSAPI Reference, SpiderMonkey
		If an exception has been thrown in the context cx, and it has not yet been caught or cleared, JS_GetPendingException stores the exception object in *vp and returns true.
325	JS_GetPositiveInfinityValue	JSAPI Reference, SpiderMonkey
		JS_GetPositiveInfinityValue returns a JS::Value that represents an IEEE floating-point positive infinity. JS_GetNegativeInfinityValue returns the corresponding negative infinity.
326	JS_GetPrivate	JSAPI Reference, SpiderMonkey
		JS_GetPrivate accesses an object's private data field. obj must be an instance of a class that has the JSCLASS_HAS_PRIVATE flag.
327	JS_GetProperty	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetProperty examines a specified JS object obj and its prototype chain for a property with the specified name. It behaves like the JavaScript expression obj[name]. JS_GetUCProperty is the Unicode version of the function. JS_GetPropertyById is the same but takes a JS::HandleId for the property name.
328	JS_GetPropertyAttributes	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetPropertyAttributes retrieves the property attributes of the property with the given name on a given object, obj. JS_GetUCPropertyAttributes is the Unicode version of the function.
329	JS_GetPropertyAttrsGetterAndSetter	JSAPI Reference, Obsolete, SpiderMonkey
		See JS_GetPropertyAttributes for details about these functions. The only difference is that on success, these functions also get the getter and setter functions for the property.
330	JS_GetPropertyDefault	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetPropertyDefault examines a specified JS object obj and its prototype chain for a property with the specified name.
331	JS_GetPropertyDescriptor	JSAPI Reference, SpiderMonkey
		JS_GetPropertyDescriptor and JS_GetPropertyDescriptorById find a specified property of an object and gets a detailed description of that property on the prototype chain (returned in desc->obj). If desc->obj is null, then this property was not found on the prototype chain.
332	JS_GetPrototype	JSAPI Reference, SpiderMonkey
		JS_GetPrototype retrieves the prototype of a specified object, obj. A prototype object provides properties inherited by similar JS objects. This is the equivalent of Object.getPrototypeOf(obj) from javascript.
333	JS_GetRegExpFlags	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetRegExpFlags returns flags of the specified object, obj.
334	JS_GetRegExpSource	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetRegExpSource returns a source string of the specified object, obj.
335	JS_GetReservedSlot	JSAPI Reference, SpiderMonkey
		If a JSClass has JSCLASS_HAS_RESERVED_SLOTS(n) in its flags, with n > 0, or has a non-null JSClass.reserveSlots callback, then objects of that class have n reserved slots in which the application may store data. These fields are not directly exposed to scripts.
336	JS_GetRuntime	JSAPI Reference, SpiderMonkey
		JS_GetRuntime retrieves a pointer to the JSRuntime with which a specified JSContext, cx, is associated. Each context is associated with a particular JSRuntime when it is created (see JS_NewContext); JS_GetRuntime provides a convenient, programmatic way to look up the association.
337	JS_GetRuntimePrivate	JSAPI Reference, SpiderMonkey
		Each JSRuntime has a field of type void * which the application may use for any purpose. It is especially useful for storing data which callbacks may then easily access. JS_GetRuntimePrivate gets the value of this field and JS_SetRuntimePrivate sets it. The field is initially NULL.
338	JS_GetScopeChain	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetScopeChain returns the first JSObject on the scope chain for the JavaScript code currently running in the given context, cx.
339	JS_GetSecurityCallbacks	JSAPI Reference, SpiderMonkey
		JS_SetSecurityCallbacks sets the runtime's security callbacks to callbacks. It allows the embedding to control certain aspects of JS code execution based on security settings of the global object the code is executed in. If callbacks is NULL, it sets callbacks to default value.
340	JS_GetStringBytes	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetStringBytes and JS_GetStringBytesZ convert the specified JavaScript string, str, to a C string (an array of 8-bit chars). If JS_CStringsAreUTF8 is true, then the returned string is UTF-8, and the conversion is lossless. Otherwise the high byte is simply dropped from each jschar. On success, the return value is a pointer to the char array, which is null-terminated. On failure, JS_GetStringBytes returns a pointer to a null-terminated empty string; JS_GetStringBytesZ returns NULL.
341	JS_GetStringCharAt	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetStringCharAt and JS_GetFlatStringCharAt get the specified character from the string str.
342	JS_GetStringChars	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetStringChars Obsolete since JavaScript 1.8.5 returns a pointer to the first element of an array of jschars. Warnings:
343	JS_GetStringCharsAndLength	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetStringCharsAndLength gets the characters and the length of the string, str
344	JS_GetStringEncodingLength	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetStringEncodingLength returns the length of the specified string in bytes, regardless of its encoding. You can use this value to create a buffer to encode the string into using the JS_EncodeStringToBuffer function.
345	JS_GetStringLength	JSAPI Reference, SpiderMonkey
		JS_GetStringLength reports the length, in 16-bit code units, of the string str. This is the same as the length property of the string. This is the same as the length of the array returned by JS_GetStringChars, in char16_ts (not bytes).
346	JS_GetTwoByteExternalStringChars	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_GetTwoByteExternalStringChars gets the characters of the string, str.
347	JS_GetTypeName	JSAPI Reference, Obsolete, SpiderMonkey
		JS_GetTypeName returns a pointer to a string literal description of a specified JS data type, type. The following table lists JSTypes and the string literals reported by JS_GetTypeName:
348	JS_GetVersion	JSAPI Reference, SpiderMonkey
		JS_GetVersion returns the JavaScript version currently used by the given JSContext, cx. The result is one of the JSVersion constants.
349	JS_HasArrayLength	JSAPI Reference, Obsolete, SpiderMonkey
		JS_HasArrayLength determines if an object, obj, has a length property. If the property exists, JS_HasArrayLength stores the current value of the property in *lengthp.
350	JS_HasElement	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_HasElement examines a specified JS object, obj, and its prototype chain, for an element or numeric property numbered index.
351	JS_HasInstance	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_HasInstance determines if a specified JS value, v, is an instance of JS object, obj. This function is equivalent to v instanceof obj test in JavaScript. On success, JS_HasInstance stores the result of the instanceof test in *bp and returns true. On error or exception, it returns false, and the value left in *bp is undefined.
352	JS_HasOwnProperty	JSAPI Reference, SpiderMonkey
		Editorial review completed.
353	JS_HasProperty	JSAPI Reference, SpiderMonkey
		JS_HasProperty searches an object, obj, and its prototype chain, for a property with the specified name. It behaves like the JavaScript expression name in obj. JS_HasUCProperty is the corresponding Unicode API. JS_HasPropertyById is the same but takes a JS::HandleId for the property name.
354	JS_IdArrayGet	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IdArrayGet gets the item in the specified index of the ID array pointed to by ida.
355	JS_IdArrayLength	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IdArrayLength gets the length of the ID array pointed to by ida.
356	JS_IdToProtoKey	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IdToProtoKey converts a specified JS ID, id, to a prototype key. On success, JS_IdToProtoKey returns a JSProtoKey. Otherwise it returns JSProto_Null.
357	JS_IdToValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IdToValue converts a specified JS ID, id, to a JS value. On success, JS_IdToValue stores the converted value in *vp and returns true. Otherwise it returns false.
358	JS_Init	JSAPI Reference, SpiderMonkey
		Initialize SpiderMonkey, returning true only if initialization succeeded. Once this method has succeeded, it is safe to call JS_NewRuntime and other JSAPI methods.
359	JS_InitCTypesClass	JSAPI, JSAPI Reference, NeedsContent, Reference, Référence(2), SpiderMonkey
		Initialize the ctypes object on a global object. The ctypes object will be frozen.
360	JS_InitClass	JSAPI Reference, SpiderMonkey
		JS_InitClass initializes a JSClass and (optionally) makes it visible to JavaScript code.
361	JS_InitStandardClasses	JSAPI Reference, SpiderMonkey
		JS_InitStandardClasses initializes the built-in JavaScript global properties. These include all the standard ECMAScript global properties defined in ECMA 262-3 §15.1:
362	JS_InstanceOf	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_InstanceOf can be used to check whether an object obj is of a particular JSClass. To use it this way, pass NULL for argv. JS_InstanceOf returns true if obj is of the given class and false otherwise. That is, it returns JS_GetClass(obj) == clasp.
363	JS_InternJSString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_InternJSString converts a string str to interned string (interned atom) and returns the result string as JSString *.
364	JS_InternString	JSAPI Reference, SpiderMonkey
		No summary!
365	JS_IsArrayObject	JSAPI Reference, SpiderMonkey
		JS_IsArrayObject determines if a specified object, obj or value, is an Array object.
366	JS_IsAssigning	JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		JS_IsAssigning returns true if a script is executing and its current bytecode is a set (assignment) operation, even if there are native (no script) stack frames between the script and the caller to JS_IsAssigning.
367	JS_IsBuiltinEvalFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsBuiltinEvalFunction returns whether the given function is the global eval function.
368	JS_IsBuiltinFunctionConstructor	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS::IsCallable returns whether the given function is the global Function constructor.
369	JS_IsConstructing	JSAPI Reference, Obsolete, SpiderMonkey
		JS_IsConstructing must be called only from a JSNative called from the engine. cx and vp must be the arguments that the engine passed to that JSNative.
370	JS_IsConstructing_PossiblyWithGivenThisObject	JSAPI, JSAPI Reference, Obsolete, Reference, Référence(2), SpiderMonkey
		In the case of a constructor called from JS_ConstructObject and JS_InitClass where the class has the JSCLASS_CONSTRUCT_PROTOTYPE flag set, SpiderMonkey passes the constructor a non-standard this object. In such cases, the following example would provide the additional information of whether a special this was supplied.
371	JS_IsConstructor	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsConstructor determines if a specified function, fun is a valid constructor object. If so, JS_IsConstructor returns true. Otherwise it returns false.
372	JS_IsExceptionPending	JSAPI Reference, SpiderMonkey
		JS_IsExceptionPending returns true if an exception has been thrown in the context cx and the exception has not yet been caught or cleared. Otherwise, it returns false
373	JS_IsExtensible	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsExtensible queries [[Extensible]] property of the specified object, obj.
374	JS_IsExternalString	JSAPI, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsExternalString returns true if the string is an external string; otherwise it's false.
375	JS_IsGlobalObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsGlobalObject returns true if obj is a global object, false otherwise.
376	JS_IsIdentifier	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsIdentifier tests if the given string is a valid ECMAScript identifier. On successful, JS_IsIdentifier stores the test result to *isIdentifier and returns true, otherwise returns false and the value of *isIdentifier is undefined.
377	JS_IsNative	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsNative returns true if the object is a native object.
378	JS_IsNativeFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsNativeFunction determines if a specified function object, funobj equals a specified native function, call. If so, JS_IsNativeFunction returns true. Otherwise it returns false.
379	JS_IsRunning	JSAPI Reference, SpiderMonkey
		JS_IsRunning determines if a script or function is currently executing in a specified JSContext, cx. If a script is executing, JS_IsRunning returns true. Otherwise it returns false.
380	JS_IsStopIteration	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IsStopIteration returns true if v is StopIteration, otherwise false.
381	JS_IterateCompartments	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_IterateCompartments calls compartmentCallback on every compartment. Beware that there is no guarantee that the compartment will survive after the callback returns. Also, barriers are disabled via the TraceSession.
382	JS_LeaveCompartment	JSAPI Reference, SpiderMonkey
		No summary!
383	JS_LeaveCrossCompartmentCall	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
384	JS_LeaveLocalRootScope	JSAPI Reference, Obsolete, SpiderMonkey
		See JS_EnterLocalRootScope for an explanation of local root scopes.
385	JS_LeaveLocalRootScopeWithResult	JSAPI Reference, Obsolete, SpiderMonkey
		See JS_EnterLocalRootScope for an explanation of local root scopes.
386	JS_LinkConstructorAndPrototype	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_LinkConstructorAndPrototype sets the prototype property of class constructor function, ctor, to prototype object, proto with JSPROP_PERMANENT | JSPROP_READONLY flags, and sets the constructor property of proto to ctor with no flag.
387	JS_Lock	JSAPI Reference, SpiderMonkey
		Lock the JS run-time environment.
388	JS_LockGCThing	JSAPI Reference, Obsolete, SpiderMonkey
		JS_LockGCThing is a deprecated function that protects a specified item, thing, associated with an executable script context, cx, from garbage collection. thing is a pointer to a jsdouble, JSString, or JSObject.
389	JS_LookupElement	JSAPI Reference, Obsolete, SpiderMonkey
		JS_LookupElement examines a specified JavaScript object, obj, for a numeric property numbered index.
390	JS_LookupProperty	JSAPI Reference, Obsolete, SpiderMonkey
		The functions JS_LookupProperty, JS_LookupUCProperty, JS_LookupPropertyById, JS_LookupPropertyWithFlags, and JS_LookupPropertyWithFlagsById search a specified object, obj, for a property with the given name. These functions all have similar behavior:
391	JS_LooselyEqual	JSAPI Reference, SpiderMonkey
		JS_LooselyEqual determines if v1 is loosely equal to v2 under the JavaScript == operator, as specified in ECMA 262-3 §11.9.3. If the comparison attempt was successful, the method returns JS_TRUE and stores the result in *equal; otherwise it returns JS_FALSE.
392	JS_MakeStringImmutable	JSAPI Reference, Obsolete, SpiderMonkey
		A string's characters can never be changed, but SpiderMonkey uses two string optimization techniques behind the scenes:
393	JS_MapGCRoots	JSAPI Reference, Obsolete, SpiderMonkey
		Call JS_MapGCRoots to map the GC's roots table using map(rp, name, data). The root is pointed at by rp; if the root is unnamed, name is null; data is supplied from the third parameter to JS_MapGCRoots.
394	JS_MaybeGC	JSAPI Reference, SpiderMonkey
		JS_MaybeGC tries to determine whether garbage collection in cx's runtime would free up enough memory to be worth the amount of time it would take. If so, it performs some garbage collection.
395	JS_New	JSAPI Reference, SpiderMonkey
		JS_New creates a new object as though by using the new operator, as described in ECMA 262-3 §11.2.2.
396	JS_NewArrayObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NewArrayObject with contents parameter creates a new array object with the specified contents elements. JS_NewArrayObject defines an enumerable array element with the value contents[i] on the new array.
397	JS_NewCompartmentAndGlobalObject	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
398	JS_NewContext	JSAPI Reference, SpiderMonkey
		JS_NewContext creates a new JSContext in the runtime rt. On success, it returns a pointer to the new context. Otherwise it returns NULL. For more details about contexts, see JSContext. For sample code that creates and initializes a JSContext, see JSAPI User Guide.
399	JS_NewDateObject	Date, JSAPI, JSAPI Reference, SpiderMonkey
		Creates and returns a new JSObject representing a JavaScript Date object, which is pre-configured using the specified values.
400	JS_NewDateObjectMsec	Date, JSAPI, JSAPI Reference, SpiderMonkey
		The returned JSObject is a standard JavaScript Date.
401	JS_NewDependentString	JSAPI Reference, SpiderMonkey
		JS_NewDependentString creates a new string as a substring of an existing JavaScript string, str. The new string contains the same characters as if it were created with the JavaScript method str.substr(start, length).
402	JS_NewDouble	JSAPI Reference, Obsolete, SpiderMonkey
		JS_NewDouble allocates a copy of the number d on the JavaScript garbage collection heap. This function is not very useful. To convert a jsdouble to a jsval, use JS_NewNumberValue instead.
403	JS_NewDoubleValue	JSAPI Reference, Obsolete, SpiderMonkey
		JS_NewDoubleValue creates a floating-point jsval.
404	JS_NewExternalString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NewExternalString and JS_NewExternalStringWithClosure create a new JSString whose characters are stored in external memory, i.e., memory allocated by the application, not the JavaScript engine. Since the program allocated the memory, it will need to free it; this happens in an external string finalizer indicated by the type parameter.
405	JS_NewFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NewFunction creates a new JavaScript function implemented in C/C++. (To create a new function implemented in JavaScript, use JS_CompileFunction instead.)
406	JS_NewGlobalObject	JSAPI, JSAPI Reference
		JS_NewGlobalObject creates a new global object based on the specified class.
407	JS_NewNumberValue	JSAPI Reference, Obsolete, SpiderMonkey
		JS_NewNumberValue converts a C floating-point number of type jsdouble to jsval, the type of JavaScript values.
408	JS_NewObject	JSAPI Reference, SpiderMonkey
		JS_NewObject creates a new object based on a specified class. cx is a pointer to a context associated with the runtime in which to establish the new object. clasp is a pointer to an existing class to use for internal methods, such as finalize. The JavaScript engine selects a prototype object for you.
409	JS_NewObjectForConstructor	JSAPI Reference, SpiderMonkey
		JS_NewObjectForConstructor creates a new object exactly as the given constructor would if invoked with new. This function does not run the code of the constructor function--it just creates the object.
410	JS_NewPlainObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NewPlainObject creates a new plain object, like new Object(), with Object.prototype as [[Prototype]].
411	JS_NewPropertyIterator	JSAPI Reference, Obsolete, SpiderMonkey
		Create an object to iterate over the enumerable own properties of obj, in arbitrary order. (This differs from longstanding for..in loop order, which uses the order in which obj's properties were defined. Note also that while for..in includes properties inherited from prototypes, iterator objects do not.)
412	JS_NewRegExpObject	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NewRegExpObject and JS_NewUCRegExpObject create a new RegExp instance. The flags from the built-in RegExp constructor properties ignoreCase, global, multiline, and sticky are OR'd in with the provided flags parameter.
413	JS_NewRuntime	JSAPI Reference, SpiderMonkey
		JS_NewRuntime initializes the JavaScript runtime environment. Call JS_NewRuntime before making any other API calls except JS_Init. JS_NewRuntime allocates memory for the JSRuntime and initializes certain internal runtime structures. maxbytes specifies the number of allocated bytes after which garbage collection is run. If parentRuntime is specified, the resulting runtime shares significant amounts of read-only state (the self-hosting and initial atoms compartments). It is recommended to make use of this for every runtime in a process after the first one.
414	JS_NewScriptObject	JSAPI Reference, Obsolete, SpiderMonkey
		JS_NewScriptObject returns the script object associated with the given JSScript.
415	JS_NewStringCopyN	JSAPI Reference, SpiderMonkey
		JS_NewStringCopyN allocates space for a JavaScript string and its underlying storage, and copies n characters from a C character array, s, into the new JSString. JS_NewUCStringCopyN is the Unicode version of the function. The two functions differ only in the type of the character array s; both functions create ordinary JavaScript strings, and all JavaScript strings are made up of 16-bit characters.
416	JS_NewStringCopyZ	JSAPI Reference, SpiderMonkey
		JS_NewStringCopyZ allocates space for a new JavaScript string and its underlying storage, and then copies the contents of a null-terminated character array, s, into the new string. On success, JS_NewStringCopyZ returns a pointer to the new JavaScript string. On error, it returns NULL.
417	JS_NewUCString	JSAPI Reference, SpiderMonkey
		JS_NewString creates and returns a new string, using the memory starting at buf and ending at buf + length as the character storage. JS_NewUCString is the Unicode version of the function.
418	JS_NextProperty	JSAPI Reference, Obsolete, SpiderMonkey
		On success, JS_NextProperty returns true, with *idp containing the id of the next enumerable own property to visit using iterobj, or JSID_VOID if there is no such property left to visit. On error, it returns false, and the value left in *idp is undefined.
419	JS_Now	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_Now returns microseconds since the epoch, midnight, January 1, 1970 UTC.
420	JS_NumberValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_NumberValue converts a C floating-point number of type double to JS::Value, the type of JavaScript values.
421	JS_ObjectIsDate	Date, JSAPI Reference, JavaScript, SpiderMonkey
		JS_ObjectIsDate() can be used to check if you are dealing with a Date object, or a Date object used across compartments (or windows or sites, in the browser embedding).  This function returns true if the object is a Date.
422	JS_ObjectIsFunction	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ObjectIsFunction tests whether obj is a function object (faster than comparing obj's class name to Function, but equivalent unless someone has overwritten the Function identifier with a different constructor and then created instances using that constructor that might be passed in as obj).
423	JS_ObjectIsRegExp	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ObjectIsRegExp determines if a specified object, obj, is a RegExp object. If so, JS_ObjectIsRegExp returns true. Otherwise it returns false.
424	JS_PSGS	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		These macros encapsulate the definition of JSNative-backed JSPropertySpecs, by defining the JSNativeWrappers for them.
425	JS_ParseJSON
		Parse a string using the JSON syntax described in ECMAScript 5 and return the corresponding value.
426	JS_PopArguments	JSAPI_Reference, Obsolete, SpiderMonkey
		JS_PopArguments frees the stack frame pointer previously allocated by JS_PushArguments and unroots the jsvals which have been associated with it (those returned by JS_PushArguments as well).
427	JS_PreventExtensions	JSAPI Reference, SpiderMonkey
		All JavaScript objects recognize the concept of extensibility: whether new properties may be added to the object.  In some situations, it may be convenient to prohibit new properties.  In JavaScript this may be accomplished using the Object.preventExtensions method.  The similar JSAPI method is JS_PreventExtensions.
428	JS_PropertyStub	JSAPI Reference, SpiderMonkey
		The stub functions are not designed to be called directly by a JSAPI application. Rather, they are convenient stand-ins anywhere the JSAPI requires callbacks of certain types. Examples at JSClass illustrate how stub functions can be used.
429	JS_PushArguments	JSAPI Reference, Obsolete, SpiderMonkey
		JS_PushArguments provides a convenient way to translate a series of native C/C++ values to jsvals with a single function call.
430	JS_PutEscapedString	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_PutEscapedString and JS_PutEscapedString write str into buffer escaping any non-printable or non-ASCII character using \escapes for JS string literals. Guarantees that a NUL is at the end of the buffer unless size is 0. Returns the length of the written output, NOT including the NUL. Thus, a return value of size or more means that the output was truncated. If buffer is null, just returns the length of the output. If quote is not 0, it must be a single or double quote character that will quote the output.
431	JS_Remove*Root	JSAPI Reference, Obsolete, SpiderMonkey
		JS_RemoveRoot removes the variable that rp points to from the garbage collector's root set.
432	JS_RemoveExternalStringFinalizer	JSAPI Reference, Obsolete, SpiderMonkey
		Remove finalizer from the global GC finalizers table, returning its type code if found, -1 if not found.
433	JS_RemoveRootRT	JSAPI Reference, Obsolete, SpiderMonkey
		Unregisters a pointer to a GC thing so that it is no longer a member of the garbage collector's root set. This enables any pointed-at GC thing to be garbage collected as needed.
434	JS_ReportError	JSAPI Reference, SpiderMonkey
		JS_ReportError is the simplest JSAPI function for reporting errors. First it builds an error message from the given sprintf-style format string and any additional arguments passed after it. The resulting error message is passed to the context's JSErrorReporter callback, if any.
435	JS_ReportErrorNumber	JSAPI Reference, NeedsContent, SpiderMonkey
		These functions create a JSErrorReport, populate it with an error message obtained from the given JSErrorCallback, and either report it to the current error reporter callback or create an Error object and set it as the pending exception.
436	JS_ReportOutOfMemory	JSAPI Reference, SpiderMonkey
		Call JS_ReportOutOfMemory to report that an operation failed because the system is out of memory. When the JavaScript engine tries to allocate memory and allocation fails, it reports an error as though by calling this function.
437	JS_ReportPendingException	JSAPI Reference, SpiderMonkey
		If an exception is pending in the context cx, JS_ReportPendingException converts the exception to a string and reports it to the current error reporter.
438	JS_ResolveStandardClass	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ResolveStandardClass resolves id, which must contain either a string or an int, to a standard class name in obj if possible, defining the class's constructor and/or prototype and storing true in *resolved. If id does not name a standard class or a top-level property induced by initializing a standard class, store false in *resolved and just return true. Return false on error, as usual for bool result-typed API entry points.
439	JS_RestoreExceptionState	JSAPI Reference, SpiderMonkey
		This function permits to restore any previously saved exception state which was saved into a JSExceptionState object created by the JS_SaveExceptionState function.
440	JS_SET_TRACING_DETAILS	JSAPI Reference, SpiderMonkey
		Set debugging information about the next thing to be traced by a JSTracer.
441	JS_SameValue	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		SameValue slightly differs from strict equality (===) in that +0 and -0 are not the same and in that NaN is the same as NaN. The SameValue algorithm is equivalent to the following JavaScript:
442	JS_SaveExceptionState	JSAPI Reference, SpiderMonkey
		Saves the current exception state (that is, any pending exception, or a cleared exception state) associated with the specified context cx, and returns a JSExceptionState object holding this state. That object may then be used to restore again the context using JS_RestoreExceptionState, or discarded using JS_DropExceptionState. Either of those two functions frees any memory used by the JSExceptionState.
443	JS_SaveFrameChain	JSAPI Reference, SpiderMonkey
		These two functions are used to set aside cx's call stack while that stack is inactive. After a call to JS_SaveFrameChain, it looks as if there is no code running on cx. Before calling JS_RestoreFrameChain, cx's call stack must be balanced and all nested calls to JS_SaveFrameChain must have had matching JS_RestoreFrameChain calls.
444	JS_ScheduleGC	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ScheduleGC sets the nextScheduled parameter of GC.
445	JS_SealObject	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SealObject prevents all write access to the object, either to add a new property, delete an existing property, or set the value or attributes of an existing property.
446	JS_SetAllNonReservedSlotsToUndefined	JSAPI Reference, SpiderMonkey
		JS_SetAllNonReservedSlotsToUndefined assignes undefined to all of obj's own properties, except the special __proto__ and __parent__ properties, in a single operation. Properties belonging to objects on obj's prototype chain are not affected.
447	JS_SetArrayLength	JSAPI Reference, SpiderMonkey
		JS_SetArrayLength sets the .length property of an object obj. length indicates the number of elements. JS_SetArrayLength(cx, obj, n) is exactly the same as setting the length property of obj to n using JS_SetProperty. This is true even if obj is not an Array object.
448	JS_SetBranchCallback	JSAPI Reference, Obsolete, SpiderMonkey
		If the callback returns JS_TRUE, the JS engine continues to execute the script.
449	JS_SetCallReturnValue2	JSAPI Reference, Obsolete, SpiderMonkey
		Calling JS_SetCallReturnValue2 indicates to the runtime that the native will return a value of type Reference.
450	JS_SetCheckObjectAccessCallback	JSAPI Reference, SpiderMonkey
		Set the runtime-wide check-object-access callback. This function is deprecated. In SpiderMonkey 1.8.1 and later, use JS_SetRuntimeSecurityCallbacks instead.
451	JS_SetCompartmentNameCallback	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetCompartmentNameCallback sets callback function which will be called to name the compartment. If the runtime has no JSCompartmentNameCallback, a compartment will be named "<unknown>"</unknown>.
452	JS_SetContextCallback	JSAPI Reference, SpiderMonkey
		JS_SetContextCallback specifies a callback function that is automatically called when JSContexts are created or destroyed. Only one callback function may be specified per JS runtime. This function returns the previous context callback, if any, else NULL.
453	JS_SetDefaultLocale	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetDefaultLocale sets the default locale for the ECMAScript Internationalization API (Intl.Collator, Intl.NumberFormat, Intl.DateTimeFormat).
454	JS_SetDestroyCompartmentCallback	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetDestroyCompartmentCallback sets callback function which will be called when sweeping each compartment of the runtime, before deleting the compartment.
455	JS_SetElement	JSAPI Reference, SpiderMonkey
		JS_SetElement assigns a value to a numeric property of an object. It behaves like the JavaScript expression obj[index] = v.
456	JS_SetErrorReporter	JSAPI Reference, SpiderMonkey
		JS_SetErrorReporter enables you to define and use your own error reporting mechanism in your applications. The reporter you define is automatically passed a JSErrorReport structure when an error occurs and has been parsed by JS_ReportError. JS_SetErrorReporter
457	JS_SetExtraGCRoots	JSAPI Reference, SpiderMonkey
		Register externally maintained GC roots.
458	JS_SetFunctionCallback	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SetFunctionCallback sets a C function to be called each time a JavaScript function is invoked or exits.
459	JS_SetGCCallback	JSAPI Reference, SpiderMonkey
		JS_SetGCCallback sets a callback function which the garbage collector calls at several points during garbage collection. rt is the runtime in which you specify the callback. cb is a pointer to the new callback function to use.
460	JS_SetGCParametersBasedOnAvailableMemory	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetGCParametersBasedOnAvailableMemory adjusts the parameters of the garbage collection based on available memory.
461	JS_SetGCZeal	JSAPI Reference, SpiderMonkey
		JS_SetGCZeal sets the level of additional garbage collection to perform for a runtime, for the purpose of finding or reproducing bugs.
462	JS_SetGlobalObject	JSAPI Reference, Obsolete, SpiderMonkey
		This function is obsolete; see also JS_GetGlobalObject.
463	JS_SetICUMemoryFunctions
		Sets the memory allocation and deallocation functions used by the ICU internationalization library.
464	JS_SetInterruptCallback	JSAPI_Reference, Reference, Référence(2), SpiderMonkey
		These functions allow setting an interrupt callback that will be called from the JS thread some time after any thread triggered the callback using JS_RequestInterruptCallback. To schedule the GC and for other activities the engine internally triggers interrupt callbacks. The embedding should thus not rely on callbacks being triggered through the external API only.
465	JS_SetNativeStackQuota	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		No summary!
466	JS_SetObjectPrincipalsFinder	JSAPI Reference, SpiderMonkey
		Set the runtime-wide object-principals-finder callback. This function is deprecated. In SpiderMonkey 1.8.1 or later, use JS_SetRuntimeSecurityCallbacks instead.
467	JS_SetOperationCallback	JSAPI Reference, Obsolete, SpiderMonkey
		These functions allow setting an operation callback that will be called from the JS thread some time after any thread triggered the callback using JS_TriggerOperationCallback. To schedule the GC and for other activities the engine internally triggers operation callbacks. The embedding should thus not rely on callbacks being triggered through the external API only.
468	JS_SetOptions	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SetOptions sets the option flags of a given JS context cx. This function returns a uint32 value containing the previous values of the flags.
469	JS_SetParent	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SetParent sets an object's parent.
470	JS_SetPendingException	JSAPI Reference, SpiderMonkey
		JS_SetPendingException sets the current exception being thrown within a context. If an exception is already being thrown, it is replaced with the new one given.
471	JS_SetPrincipalsTranscoder	JSAPI Reference, SpiderMonkey
		Set the runtime-wide principals transcoder callback. This function is deprecated. In SpiderMonkey 1.8.1 or later, use JS_SetRuntimeSecurityCallbacks instead.
472	JS_SetPrivate	JSAPI Reference, SpiderMonkey
		If a JSClass has the JSCLASS_HAS_PRIVATE flag, each object of that class has a private field of type void * which the application may use for any purpose. It is especially useful for storing C/C++ data that should not be directly visible to scripts. For example, a Socket class might use the private data field to store the socket handle.
473	JS_SetProperty	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetProperty assigns the value v to the property name of the object obj. It behaves like the JavaScript expression obj[name] = v. JS_SetUCProperty is the Unicode version of the function. JS_SetPropertyById is the same but takes a JS::HandleId for the property name.
474	JS_SetPropertyAttributes	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SetPropertyAttributes sets the attributes for a specified property, name of an object obj. JS_SetUCPropertyAttributes is the Unicode version of the function.
475	JS_SetPrototype	JSAPI Reference, SpiderMonkey
		JS_SetPrototype sets the prototype object for a specified object. A prototype object provides properties that are shared by similar JS object instances. Ordinarily you set a prototype for an object when you create the object with JS_NewObject, but if you do not set a prototype at that time, you can later call JS_SetPrototype to do so.
476	JS_SetRegExpInput	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetRegExpInput sets the pending input string of the built-in RegExp object to the specified input string. The JSREG_MULTILINE is set to multiline parameter, and other flags are all reset.
477	JS_SetScriptStackQuota	JSAPI Reference, Obsolete, SpiderMonkey
		Set the quota on the number of bytes that stack-like data structures can use when the runtime compiles and executes scripts. These structures also consume heap space, so JS_SetThreadStackLimit does not bound their size. The default quota is 32MB which is quite generous.
478	JS_SetThreadStackLimit	JSAPI Reference, Obsolete, SpiderMonkey
		No summary!
479	JS_SetVersion	JSAPI Reference, Obsolete, SpiderMonkey
		JS_SetVersion attempts to set the version of JavaScript to version for a specified executable script context, cx. The version comes from the JSVersion enumerated type.
480	JS_SetVersionForCompartment	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_SetVersionForCompartment attempts to set the version of JavaScript to version for a specified compartment, compartment. The version comes from the JSVersion enumerated type.
481	JS_ShutDown	JSAPI Reference, SpiderMonkey
		Destroys all free-standing resources allocated by SpiderMonkey, not associated with any JSRuntime, JSContext, or other structure.
482	JS_StrictlyEqual	JSAPI Reference, SpiderMonkey
		JS_StrictlyEqual determines if v1 is strictly equal to v2 under the JavaScript === operator, as specified in ECMA 262-3 §11.9.6. If the comparison attempt was successful, the method returns true and stores the result in *equal; otherwise it returns false.
483	JS_StringEqualsAscii	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_StringEqualsAscii and JS_FlatStringEqualsAscii compare string str and ASCII string asciiBytes.
484	JS_StringHasBeenInterned	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_StringHasBeenInterned returns true if the string str is interned.
485	JS_StringHasLatin1Chars	JSAPI, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_StringHasLatin1Chars returns true iff the string's characters are stored as Latin1.
486	JS_StringIsFlat	JSAPI, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_StringIsFlat returns true if the string is flattened.
487	JS_StringToVersion	JSAPI Reference, SpiderMonkey
		JS_StringToVersion attempts to convert the version string to a JSVersion value. JS_StringToVersion may return any of the following values:
488	JS_SuspendRequest	JSAPI Reference, SpiderMonkey
		Suspends the calling thread's current request, if any, to allow the thread to block or perform time-consuming calculations.
489	JS_THREADSAFE	JSAPI Reference, SpiderMonkey
		JS_THREADSAFE was a compile-time option that enables support for running multiple threads of JavaScript code concurrently as long as no objects or strings are shared between them.
490	JS_ThrowStopIteration	JSAPI Reference, SpiderMonkey
		JS_ThrowStopIteration throws the appropriate StopIteration object for the function currently executing in cx.
491	JS_ToggleOptions	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ToggleOptions toggles context-wide options. It is equivalent to JS_SetOptions(cx, JS_GetOptions(cx) ^ options).
492	JS_TracerInit	JSAPI Reference, Obsolete, SpiderMonkey
		JS_TraceChildren and other tracing APIs call the tracer callback for each traceable thing directly referenced by a particular object or runtime structure. It is the callback's responsibility to ensure the traversal of the full object graph, if desired, by eventually calling JS_TraceChildren on the passed thing. In this case the callback must be prepared to deal with cycles in the traversal graph.
493	JS_TypeOfValue	JSAPI Reference, SpiderMonkey
		JS_TypeOfValue examines a specified JS value, v, and returns its JS data type. The return value is always one of JSTYPE_VOID, JSTYPE_OBJECT, JSTYPE_FUNCTION, JSTYPE_STRING, JSTYPE_NUMBER, or JSTYPE_BOOLEAN.
494	JS_Unlock	JSAPI Reference, SpiderMonkey
		Unlock a previously locked JS run-time environment.
495	JS_ValueToBoolean	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ValueToBoolean converts a specified JavaScript value, v, to a boolean value. It implements the ToBoolean operator specified in ECMA 262-3 §9.2. On success, JS_ValueToBoolean stores the converted value in *bp and returns JS_TRUE. On error or exception, it returns JS_FALSE, and the value left in *bp is undefined.
496	JS_ValueToECMAInt32	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ValueToECMAInt32, JS_ValueToECMAUint32, and JS_ValueToUint16 convert a JavaScript value to various integer types as specified in the ECMAScript specification.
497	JS_ValueToFunction	JSAPI Reference, SpiderMonkey
		Convert a JS::Value to a JSFunction.
498	JS_ValueToId	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ValueToId converts a specified JS::Value, v, to a jsid. If v is an integer, *idp receives an integer jsid. Otherwise, if E4X support is enabled and v is an object, *idp receives an object jsid. Otherwise, *idp receives an interned string jsid based on the value of v. If v is not a string, it is converted to a string as if by calling JS_ValueToString.
499	JS_ValueToInt32	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ValueToInt32 converts a specified JS value, v, to a 32-bit signed integer (-2147483648 to 2147483647). First it converts v to a floating-point number as if by calling JS::ToNumber. If the result is NaN, an infinity, or a number outside the 32-bit range, JS_ValueToInt32 reports an error and conversion fails. Otherwise, the floating-point number is rounded to the nearest integer value.
500	JS_ValueToNumber	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ValueToNumber converts a JavaScript value to a number. It implements the ToNumber operator described in ECMA 262-3 §9.3.
501	JS_ValueToObject	JSAPI Reference, SpiderMonkey
		JS_ValueToObject converts a specified JavaScript value, v, to an object. On success, this function stores either NULL or a pointer to the resulting object in *objp and returns true. Otherwise it returns false and the value left in *objp is unspecified.
502	JS_ValueToSource	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_ValueToSource converts a specified JavaScript value, v, to a JavaScript source.
503	JS_ValueToString	JSAPI Reference, Obsolete, SpiderMonkey
		JS_ValueToString converts a specified JavaScript value, v, to a string. It implements the ToString operator specified in ECMA 262-3 §9.8. The result is like the JavaScript expression ""+v.
504	JS_VersionToString	JSAPI Reference, SpiderMonkey
		JS_VersionToString attempts to convert the version to a const char * string representation. JS_VersionToString may return any of the following values:
505	JS_YieldRequest	JSAPI Reference, SpiderMonkey
		Momentarily suspend the current JSAPI request, allowing garbage collection to run if another thread has requested it.
506	JS_freeop	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_freeop is a wrapper for js_free(p) that may delay js_free(p) invocation as a performance optimization as specified by the given JSFreeOp instance.
507	JS_malloc	JSAPI Reference, SpiderMonkey
		JS_malloc allocates a region of memory nbytes in size. On success, JS_malloc returns a pointer to the beginning of the region. As with the standard C function malloc, memory allocated by JS_malloc is uninitialized.
508	JS_updateMallocCounter	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		JS_updateMallocCounter decrements malloc counter of GC and the zone of the context.
509	OBJECT_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		OBJECT_TO_JSVAL casts obj from type JSObject * to jsval. If obj is NULL, the result is JSVAL_NULL.
510	PRIVATE_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		With PRIVATE_TO_JSVAL(), an application can store a private data pointer, p, as a jsval. This can be useful with reserved slots.
511	Property attributes	Attribute, JSAPI Reference, Reference, Référence(2), SpiderMonkey
		Some property attributes are defined in the ECMAScript standard, in ECMA 262-3 §8.6.1. SpiderMonkey additionally defines several non-standard property attributes.
512	STRING_TO_JSVAL	JSAPI Reference, Obsolete, SpiderMonkey
		STRING_TO_JSVAL casts a given JSString * to jsval. str must be a non-null pointer of type JSString *. The conversion always succeeds.
513	Stored value	JSAPI Reference, JavaScript, SpiderMonkey
		In the JSAPI, the stored value of an object property is its last known value. For a data property, this is exactly the same thing as the property's current value.
514	jschar	JSAPI Reference, Obsolete, SpiderMonkey
		jschar, a typedef for the standard C++ type char16_t, will be removed in JSAPI 38. Functions that use jschar will use char16_t directly. Embedder code should use char16_t, too. (See bug 1063962.)
515	jsdouble	JSAPI Reference, Obsolete, SpiderMonkey
		jsdouble is a C floating-point number type. It is defined to be a 64-bit, IEEE 754 compliant type. See ECMA 262-3 §8.5. Arithmetic on jsdouble values in C should behave exactly like the floating-point arithmetic in JavaScript, except that C and JavaScript may treat not-a-number values differently.
516	jsid	JSAPI Reference, Reference, Référence(2), SpiderMonkey
		jsid is either a 31-bit signed integer, interned string or object.
517	jsint	JSAPI Reference, Obsolete, SpiderMonkey
		jsint and jsuint are 32-bit integer types.
518	JSDBGAPI	JavaScript, SpiderMonkey
		These functions can be used to profile a SpiderMonkey application using the Mac profiler, Shark. See Profiling JavaScript with Shark.
519	Parser API	API, Guide, JavaScript, SpiderMonkey
		Example:
520	Profiling SpiderMonkey	Guide
		Editorial review completed.
521	Running Automated JavaScript Tests	Automated testing, Build documentation, Guide, QA, SpiderMonkey
		The jstests shell harness is js/src/tests/jstests.py. Basic usage is:
522	Running Parsemark	SpiderMonkey, tests
		Here's how you get your mitts on it. The test files are not checked into the source tree because they're non-Mozilla JS code.
523	SavedFrame	SpiderMonkey
		A SavedFrame instance is a singly linked list of stack frames. It represents a JavaScript call stack at a past moment of execution. Younger frames hold a reference to the frames that invoked them. The older tails are shared across many younger frames.
524	Setting up CDT to work on SpiderMonkey	Developing Mozilla, Eclipse, IDE, SpiderMonkey, Tools
		For CDT to index all code, SpiderMonkey has to be built with debug information. The full process of and requisites for doing so are described here. Please follow those instructions up until the point of invoking configure.
525	Shell global objects	JavaScript, NeedsContent, SpiderMonkey
		These are the global objects that are set up automatically by the SpiderMonkey js command-line interpreter when you start the program.
526	SpiderMonkey Build Documentation	Build documentation, Guide, SpiderMonkey
		Use these instructions to build the latest SpiderMonkey source code.
527	Rebranding SpiderMonkey (1.8.5)	Build documentation, SpiderMonkey
		After installing the build pre-requisites and downloading the SpiderMonkey source tarball issue the following commands at the terminal:
528	SpiderMonkey Internals	Guide, JavaScript, NeedsUpdate, SpiderMonkey
		No summary!
529	64-bit Compatibility	SpiderMonkey
		The following types or typedefs are always 64-bit on 64-bit platforms, and 32-bit on 32-bit platforms:
530	Bytecode Descriptions	SpiderMonkey
		This document is automatically generated from Opcodes.h by make_opcode_doc.py.
531	Bytecodes	SpiderMonkey
		SpiderMonkey bytecodes are the canonical form of code representation that is used in the JavaScript engine. The JavaScript frontend constructs an AST from the source text, then emits stack-based bytecodes from that AST as a part of the JSScript data structure. Bytecodes can reference atoms and objects (typically by array index) which are also contained in the JSScript data structure.
532	Functions	SpiderMonkey
		There are several flavors of JavaScript function. All are JSObjects of the same class, js_FunctionClass.
533	Garbage collection	Guide, NeedsContent, SpiderMonkey
		SpiderMonkey has a mark-sweep garbage collection (GC) with an optionally enabled incremental marking mode. The mark phase uses a mark stack, as required by incremental marking. Sweeping of objects without finalizers is deferred to a background thread.
534	Invariants	SpiderMonkey
		or, "The Zen of SpiderMonkey".
535	Property cache	SpiderMonkey
		SpiderMonkey's property cache is an internal data structure used to speed up property accesses in the interpreter and to communicate between the interpreter and JIT.
536	Self-hosted builtins in SpiderMonkey	JavaScript, SpiderMonkey
		All self-hosted code is strict, so self-hosted functions invoked in a null or undefined scope won't be run in the scope of the global object.
537	SpiderMonkey Internals: Thread Safety	Guide, SpiderMonkey
		This page describes implementation details of the SpiderMonkey JavaScript engine. It is mainly of interest to people working on SpiderMonkey itself. See JS_THREADSAFE for a gentler introduction to using SpiderMonkey in a multi-threaded application.
538	Tracing JIT	Deprecated, SpiderMonkey
		The tracing JIT in SpiderMonkey consists of a generic, low level component called nanojit which is co-maintained between Adobe and Mozilla, and a SpiderMonkey-specific high level component called jstracer. The nanojit component is language agnostic, and contains no knowledge about SpiderMonkey or any other part of the Mozilla codebase. The jstracer component consists of a monitor and a recorder. The monitor watches the executing SpiderMonkey interpreter. When the monitor determines that the interpreter has entered a region of code that would benefit from native compilation, the monitor activates the recorder. The recorder records the activity of the interpreter, using nanojit to build an efficient, native representation of the execution called a fragment. The monitor then calls into the native code stored in the fragment.
539	SpiderMonkey compartments	Guide, NeedsContent, NeedsExample, SpiderMonkey
		No summary!
540	SpiderMonkey releases	SpiderMonkey
		The easiest way to fetch the version corresponding to the current Firefox release is to visit the treeherder page for the release repository and click on the first SM(pkg) link you see. That will open a small window in the bottom left with a line like "artifact uploaded: mozjs-57.0.1.tar.bz2".
541	SpiderMonkey 1.8	SpiderMonkey
		SpiderMonkey 1.8 has one known significant regression from 1.7.
542	SpiderMonkey 1.8.5	SpiderMonkey
		SpiderMonkey 1.8.5 is supported on all the platforms where Firefox 4 runs.
543	SpiderMonkey 1.8.7	SpiderMonkey
		DRAFT IN PROGRESS - This is a draft, and right now it's mostly just a copy of the 1.8.5 release notes.
544	SpiderMonkey 1.8.8	SpiderMonkey
		SpiderMonkey 1.8.8 is supported on all the platforms where Firefox INSERT-ACTUAL-FIREFOX-VERSION-NUMBER-HERE runs.
545	SpiderMonkey 17	SpiderMonkey
		SpiderMonkey 17 is supported on all the platforms where Firefox 17 runs.
546	SpiderMonkey 24	SpiderMonkey
		SpiderMonkey 24 is supported on all the platforms where Firefox 24 runs.  Compiling it requires a C++ compiler, and the JSAPI can only be used from C++ code.  (This change was motivated by garbage collector improvements, which lean quite heavily on C++'s support for RAII through constructors and destructors.)  If you are compiling with Microsoft's Visual Studio, note that the minimum supported version is MSVC10/2010: MSVC8/9 support has been dropped.
547	SpiderMonkey 31	SpiderMonkey
		SpiderMonkey 31 is supported on all the platforms where Firefox 31 runs.  Compiling it requires a C++ compiler, and the JSAPI can only be used from C++ code.  If you are compiling with Microsoft's Visual Studio, note that the minimum supported version is MSVC10/2010: MSVC8/9 support has been dropped.
548	SpiderMonkey 38	SpiderMonkey
		SpiderMonkey 38 is supported on all the platforms where Firefox 38 runs.  Compiling it requires a C++ compiler, and the JSAPI can only be used from C++ code.  If you are compiling with Microsoft's Visual Studio, note that the minimum supported version is MSVC10/2010.
549	SpiderMonkey 45
		SpiderMonkey 45 is supported on all platforms able to run Firefox 45.  Compiling it requires a C++ compiler, and the JSAPI can only be used from C++ code.  If you are compiling with Microsoft's Visual Studio, note the minimum supported version is MSVC 2013.
550	SpiderMonkey 52
		No summary!
551	Split object	JSAPI Reference, JavaScript, SpiderMonkey
		In SpiderMonkey, a split object is made up of two JSObjects: an inner object and an outer object.