On the standards track: Yes
Is Experimental: No
Is Deprecated: Yes
In Chrome version 1 on 2008-12-11
In Chrome Android version 18 on 2012-06-27
Not in Deno
In Edge version 12 on 2015-07-28
In Firefox version 62 on 2018-09-05
In Firefox for Android version 62 on 2018-09-05
In Internet Explorer version 9 on 2011-03-14
In Node.js version 14.5.0 on 2020-06-30
In Quest Browser version 5.0 on undefined
In Opera version ≤12.1 on undefined
In Opera Android version ≤12.1 on undefined
In Safari version 1 on 2003-06-23
In Safari on iOS version 1 on 2007-06-29
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version ≤37 on undefined