Sunday, 26 August 2018

JavaScript: break statement

We already saw the use of break in switch case. Similarly, break is used in while, do-while and for loops to come out of a loop.

break.html
<!DOCTYPE html>

<html>

<head>
    <title>while loop</title>
</head>

<body>
    <script type="text/javascript">
        var number = parseInt(prompt("Enter a number less than 100", "10"));

        document.write("<h2>Even numbers from 0 to " + number + " are </h2>");

        var i = 0;

        while (i <= number) {
            if (number >= 100) {
                document.write("Input should be < 100");
                break;
            }
            document.write(i + "<br />");
            i += 2;
        }
    </script>
</body>

</html>

Load above page in browser, it prompt for input, if you enter a number which is >=100, it prints the message "Input should be < 100" and come put of the loop, else it print all the even numbers from 0 to given number.



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