On the standards track: No
Is Experimental: No
Is Deprecated: Yes
Not in Chrome
Not in Chrome Android
Not in Deno
Not in Edge
In Firefox version 1 on 2004-11-09 Removed from Firefox version 49 on 2016-09-20
In Firefox for Android version 4 on 2011-03-29 Removed from Firefox for Android version 49 on 2016-09-20
Not in Internet Explorer
Not in Node.js
Not in Quest Browser
Not in Opera
Not in Opera Android
Not in Safari
Not in Safari on iOS
Not in Samsung Internet
Not in WebView Android