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<!DOCTYPE html> <html> <body> Points: <input type="range" id="myRange" step="5"> <p>Click the button to change the value of the step attribute of the slider control.</p> <p>Try to move the slider up and down before and after you click the button to see the effect.</p> <button onclick="myFunction()">Try it</button> <p><strong>Note:</strong> input elements with type="range" are not supported in IE 9 and earlier versions.</p> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myRange").step = "25"; document.getElementById("demo").innerHTML = "The value of the step attribute was changed from '5' to '25'."; } </script> </body> </html>