Untitled

<html>
<head>
<title> Addition </title>
</head>
<script>

    var guess = -1; // Set guess to a value outside the range of valid values
        var num1 = parseInt(Math.random()*10); // get a number between 0 and 9
        var num2 = parseInt(Math.random()*10); // get a number between 0 and 9
        sum = num1 + num2;

    alert("(to help test) The correct answer is " + sum);  // Just to help test
        // Use a while loop
        while (guess != sum)
        {

                guess = prompt("Guess a number from 1 to 10", "");
                if (guess == sum)
                {
                        alert("Correct!");

                }
                else if (guess < sum)
                {
                        alert("Guess higher ");
                }
                else
                {
                        alert("Guess lower");
                }
        }

</script>
</body>
</html>