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>

const output = document.getElementById("output");
function showChar(e) {
 output.textContent = `Key KeyDown: "${e.key}"
CTRL key KeyDown: ${e.ctrlKey}
`;
}
document.addEventListener("keydown", showChar);

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