On the standards track: No
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11
In Chrome Android version 18 on 2012-06-27
In Edge version 12 on 2015-07-28
Not in Firefox
Not in Firefox for Android
In Internet Explorer version 5.5 on 2000-07-06
In Quest Browser version 5.0 on undefined
In Opera version 15 on 2013-07-02
In Opera Android version 14 on 2013-05-21
In Safari version 3.1 on 2008-03-18
In Safari on iOS version 3 on 2009-06-17
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version ≤37 on undefined