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<html><body onwheel="myFunction(event)"><h1>WheelEvent deltaMode Property</h1><p>Scroll this page to see the length unit of the delta values property.</p><p><strong>Note:</strong> 0 = pixels, 1 = lines, 2 = pages.</p><p id="demo"></p><script>function myFunction(event) { var x = event.deltaMode; document.getElementById("demo").innerHTML = x;}</script></body></html>