<html>
<body>
<p><a id="myAnchor" href="http://www.example.com/">Example link</a></p>
<p>Click the button to change the hostname of the link above.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myAnchor").host = "www.w3schools.com";
document.getElementById("demo").innerHTML = "The link above now goes to 'www.w3schools.com'.";
}
</script>
</body>
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</html>