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MouseEvent ctrlKey Property

Event Object Reference Event Object

Example

Find out whether or not the "CTRL" key was pressed when a mouse button is clicked:

if (event.ctrlKey) {
    alert("The CTRL key was pressed!");
} else {
    alert("The CTRL key was NOT pressed!");
}

Try it yourself »


Definition and Usage

The ctrlKey property returns a Boolean value that indicates whether or not the "CTRL" key was pressed when a mouse event was triggered.

Note: This property is read-only.


Browser Support

Property
ctrlKey Yes Yes Yes Yes Yes


Syntax

event.ctrlKey

Technical Details

Return Value: A Boolean, indicating whether the "CTRL" key was pressed when the mouse event occured.

Possible values:

  • true - The ctrl key was pressed
  • false - The ctrl key was not pressed
DOM Version: DOM Level 2 Events


Related Pages

HTML DOM reference: MouseEvent altKey Property

HTML DOM reference: MouseEvent metaKey Property

HTML DOM reference: MouseEvent shiftKey Property


Event Object Reference Event Object

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