On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 18 on 2012-03-28 Note: Before Chrome 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome throws a syntax error.
In Chrome Android version 18 on 2012-06-27 Note: Before Chrome Android 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome Android throws a syntax error.
In Edge version 12 on 2015-07-29 Note: Before Edge 79, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Edge throws a syntax error.
In Firefox version 14 on 2012-07-17 Note: Before Firefox 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox throws a syntax error.
In Firefox for Android version 14 on 2012-06-26 Note: Before Firefox for Android 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox for Android throws a syntax error.
In Internet Explorer version 11 on 2013-10-17 Note: Internet Explorer requires attributes: true when using attributeFilter or attributeOldValue. If attributes: true is not present, then Internet Explorer throws a syntax error.
In Quest Browser version 5.0 on undefined Note: Before Quest Browser 5.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Quest Browser throws a syntax error.
In Opera version 15 on 2013-07-02 Note: Before Opera 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera throws a syntax error.
In Opera Android version 14 on 2013-05-21 Note: Before Opera Android 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera Android throws a syntax error.
In Safari version 6 on 2012-07-25 Note: Before Safari 10.1, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.
In Safari on iOS version 6 on 2012-09-10 Note: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.
In Samsung Internet version 1.0 on 2013-04-27 Note: Before Samsung Internet 2.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Samsung Internet throws a syntax error.
In WebView Android version 4.4 on 2013-12-09 Note: Before WebView 4.4.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then WebView throws a syntax error.
In WebView on iOS version 6 on 2012-09-10 Note: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.