We're looking for a person or people to help audit MDN to find places we could speed up. Is this you or someone you know? Check out the RFP: https://mzl.la/2IHcMiE

JS GetConstructor

Retrieves the constructor for an object.


JSObject * JS_GetConstructor(JSContext *cx, JSObject *obj);
Name Type Description
cx JSContext * A context. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext.
obj JSObject * The object whose constructor is to be returned.


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.

To get an object's prototype, use JS_GetPrototype. To get an object's parent, use JS_GetParent.

MXR ID Search for JS_GetConstructor

Document Tags and Contributors

 Last updated by: Jorend,