Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Not sure how to use a While loop for this example

Not sure where to start with this code.

script.js
var secret = prompt("What is the secret password?");
do {
  secret = prompt("What is the secret password?")   
}
while prompt(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>
vincent batteast
vincent batteast
39,932 Points

ok, there are two different loops. do while and while loops. this example is a do while. Why the do key word come 1st.

the different between the do?

do while will go through the loop at least one time.

do{ the code in there will run atleast one time } while{ is the conditions is met the do code will run again }

now a while loop while{the code in there will run in a loop untel the conditions is false }

I hope this help you. Happy coding

1 Answer

Steven Parker
Steven Parker
218,583 Points

The word "prompt" should not appear after the "while", that's a syntax error.

Also, one of the advantages of the "do...while" style is you will only need to call "prompt" once (inside the loop). So outside the loop you just need to declare the variable.