On the standards track: No
Is Experimental: No
Is Deprecated: No
Not in Chrome
Not in Chrome Android
Not in Deno
Not in Edge
In Firefox version 13 on 2012-06-05
In Firefox for Android version 14 on 2012-06-26
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