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The KeyboardEvent.metaKey read-only property returning a Boolean that indicates if the Meta key was pressed (true) or not (false) when the event occurred.  Some operating systems may intercept the key so it is never detected.

Note: On Macintosh keyboards, this is the ⌘ Command key. On Windows keyboards, this is the Windows key (⊞ Windows).

At least as of Firefox 48, the ⊞ Windows key is not considered the "Meta" key. KeyboardEvent.metaKey is false when the ⊞ Windows is pressed.


var metaKeyPressed = instanceOfKeyboardEvent.metaKey

Return value

A boolean


function ismetaKey(e) {
  alert("metaKey = " + e.metaKey);
<button onclick="ismetaKey(event)">Click me with the meta key</button>


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

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Edge Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Edge Firefox Mobile (Gecko) Android IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) ? ? ? ? ?

See also

Document Tags and Contributors

 Last updated by: vonovak,