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: " + 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 | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification The definition of 'KeyboardEvent.ctrlKey' in that specification. |
Obsolete | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
ctrlKey | Chrome Full support Yes | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support