Firefox Tomorrow

web api instance property

KeyboardEvent: metaKey property

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The KeyboardEvent.metaKey read-only property returning a boolean value 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.

[!NOTE] Before Firefox 118, the ⊞ Windows key was handled as an “OS” key rather than the “Meta” key. KeyboardEvent.metaKey was false when the ⊞ Windows key was pressed.

Value

A boolean value.

Examples

<button>Click me with the meta key</button>

<p id="output"></p>

document.querySelector("button").addEventListener("click", (e) => {
  document.querySelector("#output").textContent =
    `metaKey pressed? ${e.metaKey}`;
});

Result

Interactive exampleOpen the canonical MDN source to run this embedded demo.

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also