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<!DOCTYPE html>
<html>
<head>
<script>
function myFunction() {
  alert("Thank you for visiting W3Schools!");
}
</script>
</head>
<body onunload="myFunction()">
​
<h2>Welcome to my Home Page</h2>
<p>Close this window or press F5 to reload the page.</p>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_events_onunload by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 13:24:18 GMT -->
</html>
​
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