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

What is wrong whit my code I try to run in developer tool and it run perfectly .

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

script.js
var secret;

do{
  var 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>

2 Answers

Steven Parker
Steven Parker
229,732 Points

You should only declare a variable once, though you can assign it many times.

So the keyword "var" should not be used inside the loop, since "secret" has already been declared.

Oh I see. Thank you Steven Parker