<!DOCTYPE html>
<html>
<body onhashchange="myFunction(event)">
<p>Click the button to change the anchor part (hash) of the current URL to #part5</p>
<p>The oldURL property returns the URL of the document we navigated away from.</p>
<p>The newURL property returns the URL we are navigating to.</p>
<button onclick="changePart()">Try it</button>
<p><strong>Note:</strong> These properties are not supported in Internet Explorer.</p>
<p id="demo"></p>
<script>
// Using the location.hash property to change the anchor part
function changePart() {
location.hash = "part5";
}
function myFunction() {
document.getElementById("demo").innerHTML = "Previous URL: " + event.oldURL
+ "<br>New URL: " + event.newURL;
}
</script>
</body>
</html>