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<!DOCTYPE html>
<html>
<body>
<p>Use the HTML DOM to assign an "onsearch" event to an input 
element.</p>
<p>Write something in the search field and press "ENTER".</p>
<input type="search" id="myInput">
<p><strong>Note:</strong> The onsearch event is not supported in Internet 
Explorer, Firefox or Opera 12 and earlier versions.</p>
<p id="demo"></p>
<script>
document.getElementById("myInput").onsearch = function() {myFunction()};
function myFunction() {
  var x = document.getElementById("myInput");
  document.getElementById("demo").innerHTML = "You are searching for: " + x.value;
}
</script>
</body>
</html>