Javascript Challenges

Terminator

Here you have the prototype code of the next Terminator fan page:

<!DOCTYPE html>
<html>
    <head>
        <title>Terminator Fan Page</title>
    </head>
    <body>
        <form action="/">
            <input type="text" name="name"/>
            <input type="submit" value="Send"/>
        </form>
    </body>
</html>

One of my colleagues has written the next code that will log the name we send using the form in the previous page.

<script>
    function sayonara( name ) {
        console.log( 'Sayonara ' + name + '!' );
    }

    sayonara( greetings );
</script>

But then someone sends the next message as a name and the behaviour of the page changes...

'</script><script>console.log("I will come back!")</script><script>'

Here is an example of executing the page with the bug:

<!DOCTYPE html>
<html>
    <head></head>
    <body>
        <script>
            var result = '';
            function sayonara( name ) {
                result = 'Sayonara ' + name + '!';
            }

            sayonara( '</script><script>console.log("I will come back!")</script><script>' );
        </script>
    </body>
</html>

Exercise

Correct!
False!

Fix the code:

var result = ''; function sayonara( name ) { result = 'Sayonara ' + name + '!'; } sayonara( '</script><script>console.log("I will come back!")</script><script>' );