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<!DOCTYPE html> <html> <body> <h1>The Window Object</h1> <h2>The removeEventListener() Method</h2> <p>A mousemove event handler displays a random number every time you move the mousepointer over this document.</p> <p>Click "Remove" to remove the event handler.</p> <button onclick="removeHandler()">Remove</button> <p id="demo"></p> <script> window.addEventListener("mousemove", myFunction); function myFunction() { document.getElementById("demo").innerHTML = Math.random(); } function removeHandler() { window.removeEventListener("mousemove", myFunction); } </script> </body> </html>
