This feature is obsolete. Although it is still supported by browsers, its usage is discouraged in new projects. 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.
||Pointer to the JS context in which the object's prototype or parent is being modified.|
||The object whose prototype or parent is being modified.|
||The index of the slot being modified:
||The new prototype or parent object.|
These hooks must check for cycles without deadlocking, and otherwise take special steps. See
js/src/jsobj.c for an example.