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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.


var ctrlKeyPressed = instanceOfKeyboardEvent.ctrlKey

Return value

A boolean


<title>ctrlKey example</title>

<script type="text/javascript">

function showChar(e){
    "Key Pressed: " + String.fromCharCode(e.charCode) + "\n"
    + "charCode: " + e.charCode + "\n"
    + "CTRL key pressed: " + e.ctrlKey + "\n"


<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>


Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
The definition of 'KeyboardEvent.ctrlKey' in that specification.
Obsolete Initial definition.

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See also

Document Tags and Contributors

 Contributors to this page: libbymc, fscholz, teoli
 Last updated by: libbymc,