http://simonwillison.net/2008-02-10T12:00:00+00:00Simon Willison2008-02-10T12:00:00+00:002008-02-10T12:00:00+00:00https://simonwillison.net/2008/Feb/10/cross-window-messaging/#atom-tag

<p><strong><a href="http://ejohn.org/blog/cross-window-messaging/">Cross-Window Messaging</a></strong></p> Now in Firefox 3 trunk, the HTML 5 specified ability for JavaScript to send messages between windows (or iframes) hosted on different domains. Fantastically powerful, but must be implemented with care to avoid accidentally processing bad messages from malicious third parties. <p>Tags: <a href="https://simonwillison.net/tags/crosswindowmessaging">crosswindowmessaging</a>, <a href="https://simonwillison.net/tags/firefox">firefox</a>, <a href="https://simonwillison.net/tags/firefox3">firefox3</a>, <a href="https://simonwillison.net/tags/html5">html5</a>, <a href="https://simonwillison.net/tags/javascript">javascript</a>, <a href="https://simonwillison.net/tags/john-resig">john-resig</a></p>