This is great. I found this pattern very useful when communicating with iframes. I wrote a similar library a while back. https://github.com/taylorhakes/postmes

This is great. I found this pattern very useful when communicating with iframes. I wrote a similar library a while back. https://github.com/taylorhakes/postmessage-plus https://github.com/taylorhakes/postmessage-plus