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<!DOCTYPE html>
<html>
<body>
<p><a id="myAnchor" href="https://www.w3schools.com/">W3Schools</a></p>
<p>Click the button to display the value of the id attribute of the link above.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
  var x = document.getElementById("myAnchor").id;
  document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>