将obj-c类传递给javascript不起作用。我究竟做错了什么？

I'm writing some backend code in javascript and plan to use native code for GUI. This works totally fine in Android, but I'm having some issues making this work in Cocoa on Mac OS X. I've followed apples tutorial on the matter, but it just doesn't work. Let me try to explain this after you've seen the code.I'm writing some backend code in javascript and