On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Bun version 1.0.0 on 2023-09-08
In Chrome version 53 on 2016-08-31
In Chrome Android version 53 on 2016-09-07
In Deno version 1.0 on 2020-05-13
In Edge version 79 on 2020-01-15
In Firefox version 52 on 2017-03-07 Note: Before Firefox 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.
In Firefox for Android version 52 on 2017-03-07 Note: Before Firefox for Android 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.
Not in Internet Explorer
In Node.js version 14.5.0 on 2020-06-30 Note: This is not used in Node.js and is provided purely for completeness.
In Quest Browser version 5.0 on undefined
In Opera version 40 on 2016-09-20
In Opera Android version 41 on 2016-10-25
In Safari version 10 on 2016-09-20
In Safari on iOS version 10 on 2016-09-13
In Samsung Internet version 6.0 on 2017-08-23
In WebView Android version 53 on 2016-09-07
In WebView on iOS version 10 on 2016-09-13