On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Bun version 1.0.1 on 2023-09-12
In Chrome version 1 on 2008-12-11
In Chrome Android version 18 on 2012-06-27
In Edge version 12 on 2015-07-29
In Firefox version 1 on 2004-11-09 Note: Before Firefox 69, platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system. You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead.
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 4 on 1997-09-30
In Node.js version 21.2.0 on 2023-11-14
In Quest Browser version 5.0 on undefined
In Opera version ≤12.1 on undefined
In Opera Android version ≤12.1 on undefined
In Safari version 1 on 2003-06-23
In Safari on iOS version 1 on 2007-06-29
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 4.4 on 2013-12-09
In WebView on iOS version 1 on 2007-06-29