Unlike event similar to edge.create

Question

Via the Facebook javascript API, you can subscribe to the 'event.create' event to listen for when users "Like" something on a page via the Like Plugin. Is it possible to respond to the same user un-liking it as well? I don't see any events documented, wondering if this is a hidden feature.

Answer 1

You can now subscribe to the “edge.remove" event to know when a user unlikes a page. For example:

FB.Event.subscribe('edge.remove', function(href, widget) {
  alert('You just unliked '+href);
});

Announcement: http://developers.facebook.com/blog/post/446/ documented at http://developers.facebook.com/docs/reference/javascript/FB.Event.subscribe