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KeyboardEvent.ctrlKey

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

Syntax

var ctrlKeyPressed = instanceOfKeyboardEvent.ctrlKey

Return value

A boolean

Example

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

<script type="text/javascript">

function showChar(e){
  alert(
    "Key Pressed: " + String.fromCharCode(e.charCode) + "\n"
    + "charCode: " + e.charCode + "\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	Status	Comment
Document Object Model (DOM) Level 3 Events Specification The definition of 'KeyboardEvent.ctrlKey' in that specification.	Obsolete	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	Yes	Yes	Yes	Yes

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	?	?	Yes	?	?	?	?

KeyboardEvent.ctrlKey

Syntax

Return value

Example

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also