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

Samuel Igborgbor
Samuel Igborgbor
4,335 Points
Posted by Samuel Igborgbor
Samuel Igborgbor
4,335 Points

Create a 'do...while' loop

This is the code we used in the last code challenge. After learning about do...while loops, don't you think this would work better in the do...while style? Re-write the code to use a do...while loop.

script.js 
var secret;
var correctGuess = false;

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

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>
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Moderator Note:

Duplicate post have been deleted from the Community for this question. Please refrain from posting multiple threads for the same question.

Thank-you :)

Jason :dizzy:

1 Answer

brandon downs
brandon downs
11,577 Points
brandon downs
brandon downs
11,577 Points

You are really close!

I believe you are running into a scoping issue. you declared the variable secrets in the global scope, and then you also declare the variable secrets in the scope of the do... while loop.

var secret;
var correctGuess = false;

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

if you get rid of the var declaration inside the do.. while loop it works fine!

var secret;
var correctGuess = false;

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

you can also get away without creating the variable correctGuess 

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

I hope this helps!