This article covers features introduced in SpiderMonkey 17

Retrieves the original, canonical Function.prototype for an object's global object.


JSObject *
JS_GetFunctionPrototype(JSContext *cx, JS::HandleObject forObj);
Name Type Description
cx JSContext * Pointer to a JavaScript context from which to derive runtime information. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext.
forObj JS::HandleObject An object from the global whose Function.prototype is being retrieved.


JS_GetFunctionPrototype() retrieves the original Function.prototype of a specified object, obj.  If an error occurs, it returns NULL.

Note: This expression might have different values over time if the global Function property is modified, but this method returns only the original value.

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