Convenience function that checks whether the value stored in member_name of object is null. It is an error to specify a member_name which does not exist.
See also: json.object.ObjectWrap.getMember, json.object.ObjectWrap.hasMember
the name of the member
TRUE if the value is null
Convenience function that checks whether the value stored in member_name of object is null. It is an error to specify a member_name which does not exist.
See also: json.object.ObjectWrap.getMember, json.object.ObjectWrap.hasMember