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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> </html>
