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You are here: Reference > JavaScript > client-side > event handling > properties > metaKey (event)

metaKey property (event)

Browser support:

9

Retrieves a Boolean value that indicates whether the META key was down at the time when the event occurred.

Syntax:

object.metaKey;

You can find the related objects in the Supported by objects section below.

This property is read-only.

Possible values:

Boolean that represents one of the following values:

false

META key is up.

true

META key is down.

Default: this property has no default value.

Example HTML code 1:

This example illustrates the use of the metaKey property:

<head>
    <script type="text/javascript">
        function GetMetaKey (event) {
            if ('metaKey' in event) {
                alert (event.metaKey);
            } else {
                alert ("Your browser doesn't support event.metaKey property.");
            }
        }
    </script>
</head>
<body>
    <button onclick="GetMetaKey (event);">Get meta key state!</button>
</body>