On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 4 on 2010-01-25
In Chrome Android version 18 on 2012-06-27
In Edge version 12 on 2015-07-28
In Firefox version 3.5 on 2009-06-30
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 6 on 2001-08-27
In Quest Browser version 5.0 on undefined
In Opera version 10 on 2009-09-01
In Opera Android version 10.1 on 2010-11-09
In Safari version 3.1 on 2008-03-18
In Safari on iOS version 2 on 2008-07-11
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 2.2 on 2010-05-20