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

Posted by James Ma
James Ma
19,063 Points

do...while.... loop challenge.

I am trying to do the second do while loop challenge. I seem to have hit a standstill. I am utilizing brackets, because i kept receiving a syntax error/parse error, and thought I may be missing a semi colon somewhere. But as i run my code, I get a continuous loop of the "what is the secret password" prompt.

script.js 
var secret;
var correctPassword = false;
do {
  secret = prompt("What is the secret password?");
  if (secret === "sesame") {
      correctPassword = true;
      document.write("You know the secret password. Welcome.");
  }
while ( secret !== "sesame" ) {
  secret = prompt("What is the secret password?");    
  }
}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Tobias Helmrich
Tobias Helmrich
31,602 Points
Tobias Helmrich
Tobias Helmrich
31,602 Points

Hey James,

you were on the right track but the problem is that the while in a do-while loop doesn't have a body with code. You have to close the do loop before the while and remove the code in the body of the while. The while is just there to check the condition, not to execute code and even if it would work you would prompt the user for his input two times which is obsolete as it is a loop. I hope that makes sense, if you have further questions feel free to ask! :)

Here is your code modified so it will work:

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

Good luck! :)