Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops Create a `do...while` loop

kevinthecoder
kevinthecoder
10,791 Points
Posted by kevinthecoder
kevinthecoder
10,791 Points

I'm stumped on the do/while loop for secret. Need help please.

I've attached my code below. Not sure why this doesn't work as I have declared secret inside the do/while loop, which should prompt the user for input. What am I doing wrong? It should keep prompting secret is not equal to "sesame". (while secret != "sesame")

script.js 
var secret = prompt("What is the secret password?");
// while ( secret !== "sesame" ) {
//  secret = prompt("What is the secret password?");    
// }
// document.write("You know the secret password. Welcome.");

do {
secret = prompt("What is the secret password?");

} while (secret !== "sesame")

document.write("You know the secret password. Welcome.");
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Erik McClintock
Erik McClintock
45,783 Points
Erik McClintock
Erik McClintock
45,783 Points

Kevin,

You will pass this challenge if you remove the instantiation of your secret variable before the loop. At the top of your code, simply write:

var secret;

And the rest should be good to go.

Erik

kevinthecoder
kevinthecoder
10,791 Points
kevinthecoder
kevinthecoder
10,791 Points

Thanks, Erik! That one really threw me...haha.

Marcus Parsons
Marcus Parsons
15,719 Points

Just to go into further reasoning as to why you should do this is that the do/while and while loops work differently. A do-while loop will execute the code in the code block before checking the condition of the loop. A while loop will execute the code in the code block after checking the condition of the loop. For both loops, it would be perfectly valid to only instantiate the variable without a prompt and then type out either the while or do-while loop. It's just that the challenges are very specific as to what they want. =]