Addition between Two Numbers

Write a JavaScript to add two numbers read from user.

Solution:
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Addition of Two Numbers</title>
</head>
<body>
  <script type="text/javascript">
    var num1 = window.prompt("Enter first number::");
    var num2 = window.prompt("Enter second number::");
    var sum = parseInt(num1) + parseInt(num2);
    document.write("Sum of "+num1+" and "+num2+" is "+sum);
  </script>
</body>
</html>
Output: