<html>
<body>
<p id="demo">Click the button to display the unicode of the last character in a string.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var str="HELLO WORLD";
var n=str.charCodeAt(str.length-1);
document.getElementById("demo").innerHTML=n;
}
</script>
</body></html>