This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
JSObjectOps is not a supported API. Details of the API may change from one release to the next. This documentation should be considered SpiderMonkey internals documentation, not API documentation. See bug 408416 for details.
deleteProperty are high-level callbacks that implement object property accesses.
Each of these callbacks is responsible for everything involved with an individual property access operation, including: any locking necessary for thread safety; security checks; finding the property, including walking the prototype chain if needed; calling the lower-level
JSClass hooks; calling getters or setters; and actually getting, setting, or deleting the property once it is found.
typedef JSBool (*JSPropertyIdOp)( JSContext *cx, JSObject *obj, jsid id, jsval *vp);
||Pointer to the JS context in which the property access is happening.|
||The object to be accessed.|
||The name or index of the property to access.|
||In/out parameter. See the Description section below.|
Get, set, or delete
JS_FALSE on error or exception,
JS_TRUE on success. If getting or setting, the new value is returned in
*vp on success.
If deleting without error,
*vp will be
obj[id] is permanent, and
id named a direct property of
obj that was in fact deleted, or if
id names no direct property of
id could name a property of a prototype, or no property in
obj or its prototype chain). This reflects the quirky behavior of
delete as specified in ECMA 262-3 §11.4.1 and §220.127.116.11.