MouseEvent metaKey property

Definition and usage

The metaKey property returns a boolean value indicating whether the "META" key was pressed when the mouse event was triggered.

Not all keyboards have a meta key. For Sun Microsystems keyboards and MIT and LISP machine keyboards, it is common. The meta key is marked as "META" or marked with a solid diamond symbol "◆".

On Mac keyboards, the META key is represented by the "Command/Cmd" ("⌘") key.

Note:This property is read-only.

Example

Determine if the "META" key was pressed when clicking the mouse button:

if (event.metaKey) {
  alert("The META key was pressed!");
}
  alert("The META key was NOT pressed!");
}

Try it yourself

Syntax

event.metaKey

Technical details

Return value:

A boolean value indicating whether the "META" key was pressed when the mouse event occurred.

Possible values:

  • true - meta key was pressed
  • false - meta key was not pressed
DOM version: DOM Level 2 Events

Webbläsarstöd

Egenskaper Chrome IE Firefox Safari Opera
metaKey Stöd Stöd Stöd Stöd Stöd

Relaterade sidor

HTML DOM Referenshandbok:MouseEvent altKey-egenskap

HTML DOM Referenshandbok:MouseEvent ctrlKey-egenskap

HTML DOM Referenshandbok:MouseEvent shiftKey-egenskap