KeyboardEvent.ctrlKey

The KeyboardEvent.ctrlKey read-only property returns a boolean value that indicates if the control key was pressed (true) or not (false) when the event occurred.

Syntax

var ctrlKeyPressed = instanceOfKeyboardEvent.ctrlKey

Return value

A boolean value

Example

<html>
<head>
<title>ctrlKey example</title>

<script type="text/javascript">

function showChar(e){
  alert(
    "Key Pressed: " + e.key + "\n"
    + "CTRL key pressed: " + e.ctrlKey + "\n"
  );
}

</script>
</head>

<body onkeypress="showChar(event);">
<p>Press any character key, with or without holding down the CTRL key.<br />
You can also use the SHIFT key together with the CTRL key.</p>
</body>
</html>

Specifications

Specification
UI Events
# dom-keyboardevent-ctrlkey

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
ctrlKey
1
12
1.5
9
≤12.1
≤4
≤37
18
4
≤12.1
≤3
1.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/ctrlKey