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

JavaScript

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var ctrlKeyPressed = instanceOfKeyboardEvent.ctrlKey

Return value

A boolean

Example

JavaScript

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<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.	Working Draft	Initial definition.

Feature	Firefox (Gecko)	Chrome	Internet Explorer	Opera	Safari
Basic support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

Feature	Firefox Mobile (Gecko)	Android	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	?	?	?	?

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/keyboardevent/ctrlkey

API DOM KeyboardEvent Property Read-only Reference Référence