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<html><body><p>Use the HTML DOM to assign an "onhashchange" event to a body element.</p><p>Click the button to change the anchor part of the current URL to #part5</p><button onclick="changePart()">Try it</button><p id="demo"></p><script>// Using the location.hash property to change the anchor partfunction changePart() { location.hash = "part5"; var x = location.hash; document.getElementById("demo").innerHTML = "The anchor part is now: " + x;}document.getElementsByTagName("BODY")[0].onhashchange = function() {myFunction()};function myFunction() { alert("The anchor part has changed!");}</script></body></html>