MouseEvent.getModifierState()

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 the document of KeyboardEvent.getModifierState() for details.

Syntax

var active = event.getModifierState(keyArg);

Returns

A Boolean

Parameters

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

Specifications

Specification	Status	Comment
Document Object Model (DOM) Level 3 Events Specification The definition of 'getModifierState()' in that specification.	Obsolete	Initial definition.

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getModifierState`	Chrome Full support 47	Edge Full support 12	Firefox Full support Yes	IE ?	Opera Full support Yes	Safari ?	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support 5.0
`"Accel"` parameter DeprecatedNon-standard	Chrome No support No	Edge No support No	Firefox ?	IE ?	Opera ?	Safari ?	WebView Android No support No	Chrome Android No support No	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.