<html>
<body>
<script>
var myNumber = 128;
document.write(myNumber + ' decimal<br>');
document.write(myNumber.toString(16) + ' hex<br>');
document.write(myNumber.toString(8) + ' octal<br>');
document.write(myNumber.toString(2) + ' binary<br>');
</script>
</body>
</html>