On the standards track: Yes
Is Experimental: No
Is Deprecated: Yes
In Chrome version 1 on 2008-12-11 Removed from Chrome version 40 on 2015-01-21
In Chrome Android version 18 on 2012-06-27 Removed from Chrome Android version 40 on 2015-01-21
Not in Edge
In Firefox version 1 on 2004-11-09 Removed from Firefox version 62 on 2018-09-05
In Firefox for Android version 4 on 2011-03-29 Removed from Firefox for Android version 62 on 2018-09-05
Not in Internet Explorer
Not in Quest Browser
In Opera version ≤12.1 on undefined Removed from Opera version 27 on 2015-01-27
In Opera Android version ≤12.1 on undefined Removed from Opera Android version 27 on 2015-01-29
In Safari version 3 on 2007-10-26
In Safari on iOS version 1 on 2007-06-29
In Samsung Internet version 1.0 on 2013-04-27 Removed from Samsung Internet version 4.0 on 2016-03-11
In WebView Android version 4.4 on 2013-12-09 Removed from WebView Android version 40 on 2015-01-21