On the standards track: Yes
Is Experimental: No
Is Deprecated: No
Not in Chrome
Not in Chrome Android
Not in Edge
In Firefox version 31 on 2014-07-22
In Firefox for Android version 31 on 2014-07-22
Not in Internet Explorer
Not in Quest Browser
Not in Opera
Not in Opera Android
In Safari version 8 on 2014-10-16
In Safari on iOS version 8 on 2014-09-17
Not in Samsung Internet
Not in WebView Android