7

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Script-Type" content="text/javascript" />
    <title>JavaScript substring</title>
</head>
<body>
    <!--File: listing-7-7.htm -->
    <script type="text/javascript">
   <!--
    var strFullString = "a string";
    var intLength = strFullString.length;
    var strSubString = strFullString.substring(intLength-1, intLength);
    document.write("Last character is " + strSubString);
  // -->
    </script>
</body>
</html>