JavaScript math random
<html>
<body>
<script type="text/javascript">
//return a random number between 0 and 1
document.write(Math.random() + "<br />");
//return a random integer between 0 and 10
document.write(Math.floor(Math.random()*11));
</script>
</body>
</html>
<body>
<script type="text/javascript">
//return a random number between 0 and 1
document.write(Math.random() + "<br />");
//return a random integer between 0 and 10
document.write(Math.floor(Math.random()*11));
</script>
</body>
</html>
Result
