<html>
<head>
</head>
<body>
<script>
var s = 1;
for(var i = 1 ; i < 10 ; i++){
s = s * i;
document.write(i +" ! = " + s+"<br/>");
}
</script>
</body>
</html>
1 ! = 1
2 ! = 2
3 ! = 6
4 ! = 24
5 ! = 120
6 ! = 720
7 ! = 5040
8 ! = 40320
9 ! = 362880