<!DOCTYPE html>
<html>
<body>

<p>This example uses 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>