charAt() : find Character at the Specified Index in JavaScript

Script :

<html>
<body>
<script type="text/javascript">
var str="c4learn.com/javascript";
document.write("First character : " + str.charAt(0) + "<br />");
document.write("Last character  : " + str.charAt(str.length-1));
</script>
</body>
</html>

Output :

First character : c
Last character : t