Is cross-origin postMessage broken in IE10?

Question

I\'m trying to make a trivial postMessage example work...

• in IE10
• between windows/tabs (vs. iframes)
• across origins

Answer 1

Right now, (2014-09-02), Your best bet is to use a proxy frame as noted in the msdn blog post that details a workaround for this issue: https://blogs.msdn.microsoft.com/ieinternals/2009/09/15/html5-implementation-issues-in-ie8-and-later/

Here's the working example: http://www.debugtheweb.com/test/xdm/origin/

You need to set up a proxy frame on your page that has the same origin as the popup. Send information from the popup to the proxy frame using window.opener.frames[0]. Then use postMessage from the proxy frame to the main page.