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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<body ontouchstart="isKeyPressed(event)">
​
<h1>The TouchEvent's altKey Property</h1>
​
<p>Touch somewhere in this document.</p>
​
<p>An alert box will tell you if the ALT key was pressed when the event occured.</p>
​
<p><strong>Tip:</strong> Try holding down the ALT key (if your keyboard has one) when you touch the document.</p>
<p><strong>Note:</strong> Many touch devices do not have an ALT key.</p>
​
<script>
function isKeyPressed(event) {
  if (event.altKey) {
    alert("The ALT key was pressed!");
  } else {
    alert("The ALT key was NOT pressed!");
  }
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_event_touch_altkey by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:17:04 GMT -->
</html>
​
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