On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11
Not in Chrome Android
In Edge version 12 on 2015-07-28
In Firefox version 6 on 2011-08-16
In Firefox for Android version 6 on 2011-08-16
In Internet Explorer version 8 on 2009-03-19
Not in Quest Browser
In Opera version 11.6 on 2011-12-06
In Opera Android version 12.1 on 2012-10-09
In Safari version 3 on 2007-10-26
In Safari on iOS version 1 on 2007-06-29
Not in Samsung Internet
Not in WebView Android