<html>
<body>
<p>This example uses the addEventListener() method to add two click events to the same button.</p>
<button id="myBtn">Try it</button>
<script>
var x = document.getElementById("myBtn");
x.addEventListener("click", myFunction);
x.addEventListener("click", someOtherFunction);
function myFunction() {
alert ("Hello World!")
}
function someOtherFunction() {
alert ("This function was also executed!")
}
</script>
</body>
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</html>