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

Posted by MUZ140963 Tonderai Mudede
MUZ140963 Tonderai Mudede
2,774 Points

Where am i going wrong with my code??

The do ... while loop seems a bit confusing, hey!!

script.js 
var secret = prompt("What is the secret password?");
secret = "sesame"
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>
David Lu
David Lu
1,576 Points

Do you want != or !==?

MUZ140963 Tonderai Mudede
MUZ140963 Tonderai Mudede
2,774 Points

I need to recreate that code to a do.....while loop. So i'm being told to call the prompt() once, and inside the loop

2 Answers

Will Potter
Will Potter
7,577 Points
Will Potter
Will Potter
7,577 Points

The prompt method should only be used once, inside the do while loop. So you can get rid of the first prompt in your code, as well as the second line ("secret = sesame"). Your code should look like this:

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

You declare the secret variable in the first line. Then you start the do while loop. Your code looks fine in that respect. Let me know if you have any questions.
Chad Donohue
Chad Donohue
5,657 Points
Chad Donohue
Chad Donohue
5,657 Points

Remember that a do...while loop will always execute once. So, you can declare secret and eliminate some duplicate code.

var secret;

do {
  secret = prompt("What is the secret password?");
} while ( secret !== 'sesame' )

document.write("You know the secret password. Welcome.");