Mega Code Archive
Use substring method to get the sub string
<![CDATA[
<html>
<head>
<title>Splitting a string into substrings</title>
<script type="text/javascript" >
var a = "Bytes and bits";
var b = a.substring(10, 13);
document.write(b);
</script>
</head>
<body>
</body>
</html>
]]>