MouseEvent: getModifierState() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2019.

See full compatibility

The MouseEvent.getModifierState() method returns the current state of the specified modifier key: true if the modifier is active (i.e., the modifier key is pressed or locked), otherwise, false.

See KeyboardEvent.getModifierState() for details.

Syntax

getModifierState(key)

Parameters

key: A modifier key value. The value must be one of the KeyboardEvent.key values which represent modifier keys or "Accel" . This is case-sensitive.

Return value

A boolean value.

Specifications

Specification
Pointer Events # dom-mouseevent-getmodifierstate

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`getModifierState`	Chrome – Full support Chrome 47 (Release date: 2015-12-01) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 15 (Release date: 2012-08-28) footnote Full support	Opera – Full support Opera 34 (Release date: 2015-12-08) footnote Full support	Safari – Full support Safari 12.1 (Release date: 2019-03-25) footnote Full support	Chrome Android – Full support Chrome Android 47 (Release date: 2015-12-02) footnote Full support	Firefox for Android – Full support Firefox for Android 15 (Release date: 2012-08-28) footnote Full support	Opera Android – Full support Opera Android 34 (Release date: 2015-12-16) footnote Full support	Safari on iOS – Full support Safari on iOS 12.2 (Release date: 2019-03-25) footnote Full support	Samsung Internet – Full support Samsung Internet 5 (Release date: 2016-12-15) footnote Full support	WebView Android – Full support WebView Android 47 (Release date: 2015-12-02) footnote Full support	WebView on iOS – Full support WebView on iOS 12.2 (Release date: 2019-03-25) footnote Full support
`"Accel"` parameter Deprecated Non-standard	Chrome – No support Chrome footnote No support	Edge – No support Edge footnote No support	Firefox – Full support Firefox 32 (Release date: 2014-09-02) footnote Full support	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – No support Chrome Android footnote No support	Firefox for Android – Full support Firefox for Android 32 (Release date: 2014-09-02) footnote Full support	Opera Android – No support Opera Android footnote No support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – No support WebView Android footnote No support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Non-standard. Check cross-browser support before using.
: Deprecated. Not for use in new websites.