Get the current pending exception for a given
JSBool JS_GetPendingException(JSContext *cx, jsval *vp);
||Pointer to the JS context in which the exception was thrown.
Requires request. In a
||Out parameter. On success,
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
Otherwise, it returns
JS_FALSE, and the value left in
*vp is undefined.
See examples in the JSAPI Phrasebook.