<!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>