KeyboardEvent: ctrlKey property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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

Value

A boolean value.

Examples

html
<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>
<pre id="output"></pre>
js
const output = document.getElementById("output");

function showChar(e) {
  output.textContent = `Key KeyDown: "${e.key}"
CTRL key KeyDown: ${e.ctrlKey}
`;
}

document.addEventListener("keydown", showChar);

Specifications

Specification
UI Events
# dom-keyboardevent-ctrlkey

Browser compatibility

See also