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<!DOCTYPE html>
<html>
<body onwheel="myFunction(event)">
​
<h1>WheelEvent deltaZ Property</h1>
​
<p>Scroll this page to see the value of the deltaZ property.</p>
​
<p><strong>Note:</strong> Most mouse devices do not have the ability to scroll along the z-axis, and will always return 0.</p>
​
<p id="demo"></p>
​
<script>
function myFunction(event) {
  var z = event.deltaZ;
  document.getElementById("demo").innerHTML = z;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_event_wheel_deltaz by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:03:01 GMT -->
</html>
​
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