<!DOCTYPE html>
<html>
<head>
<title>While loop Demo-aimtocode.com</title>
<script type="text/javascript">
var sum = 0;
var number = 1;
while (number <= 50) { // -- condition
sum += number; // -- body
number++; // -- updater
}
alert("Sum = " + sum); // => Sum = 1275
</script>
</head>
<body>
</body>
</html>