Single Line Comment : JavaScript

How to Write Single Line Comment in JavaScript ?

<html>
<head>
<title>A Simple Page</title>
<script language="javascript">
// The first JS Comment
alert("I am Alert Box");
// Second JS Comment
alert("I am also Alert Box");
// 
</script>
</head>
<body>
</body>
</html>

Reference :

  1. Comment in JavaScript