MouseEvent altKey Property - Javascript DOM

Javascript examples for DOM:Mouse Event

Description

The altKey property returns a Boolean value telling if the "ALT" key was pressed while the mouse event was triggered.

This property is read-only.

The following code shows how to find out whether or not the "ALT" key was pressed when a mouse button is clicked:

Demo Code

ResultView the demo in separate window

<!DOCTYPE html>
<html>
<body onmousedown="isKeyPressed(event)">

<p>Click somewhere in the document while holding the ALT key.</p>

<script>
function isKeyPressed(event) {//from  w ww .ja  v  a  2  s  .  co m
    if (event.altKey) {
        console.log("The ALT key was pressed!");
    } else {
        console.log("The ALT key was NOT pressed!");
    }
}
</script>

</body>
</html>

Related Tutorials