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<!DOCTYPE html> <html> <body> <p>This example uses the addEventListener() method to add two click events to the same button. However, the stopImmediatePropagation() method <b>stops</b> the second event handler from being executed.</p> <p><strong>Note:</strong> The stopImmediatePropagation() method is not supported in IE8 and earlier versions.</p> <button id="myBtn">Try it</button> <script> function myFunction(event) { alert ("Hello World!"); event.stopImmediatePropagation(); // Try to remove me } function someOtherFunction() { alert ("I will not get to say Hello World"); } var x = document.getElementById("myBtn"); x.addEventListener("click", myFunction); x.addEventListener("click", someOtherFunction); </script> </body> </html>