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 A Closer Look At Loop Conditions

Edward Kiefer
Edward Kiefer
2,077 Points
Posted by Edward Kiefer
Edward Kiefer
2,077 Points

I can't figure out how to...

"You need to assign a new value to the secret variable inside the loop."

Very grateful for any pointers

app.js 
var secret = prompt("What is the secret password?");


while ( secret !== "sesame" ) {

  document.write(secret);


}


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="app.js"></script>
</body>
</html>

3 Answers

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

In addition to Daniel Gonzalez's answer, I'd like to make his code even DRYer (DRY means don't repeat yourself). Instead of using a while loop, you could use a do/while loop. using a do/while loop would run the code inside the while loop once, and then running the code over and over again. So, you could say:

var secret ="";

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

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

But, it is much cleaner to do this instead:

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

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

I hope this helps! ~Alex :smile:

Daniel Gonzalez
Daniel Gonzalez
22,105 Points
Daniel Gonzalez
Daniel Gonzalez
22,105 Points

Hi Edward,

The challenge is asking "The code in app.js just opens a prompt, asks for a password, and writes to the document. Something is missing. Add a while loop, so that a prompt keeps appearing until the user types "sesame" into the prompt." You need to include the prompt inside the while loop as the while loop will continue to loop and continue to display the prompt until the user input in the prompt secret = "sesame". 

var secret ="";


while ( secret !== "sesame" ) {

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

}


document.write("You know the secret password. Welcome.");
Edward Kiefer
Edward Kiefer
2,077 Points
Edward Kiefer
Edward Kiefer
2,077 Points

Thanks so much for your help, very best Edward