Write a JavaScript program to add two numbers provided by user
<html>
<head>
<title>Sum of two numbers</title>
</head>
<body>
<script>
var a = parseInt(prompt("Enter the value of a", "0"));
var b = parseInt(prompt("Enter the value of b", "0"));
var sum = a + b;
document.write("<br>Value of a = " + a);
document.write("<br>Value of b = " + b);
document.write("<br>Addition of a & b = " + sum);
</script>
</body>
</html>
