On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 5 on 2010-05-25
In Chrome Android version 18 on 2012-06-27
In Edge version 79 on 2020-01-15
In Firefox version 38 on 2015-05-12
In Firefox for Android version 38 on 2015-05-12
In Internet Explorer version 5 on 1999-03-18
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 5 on 2010-06-07
In Safari on iOS version 4.2 on 2010-11-22
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 4.4 on 2013-12-09