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

Posted by Jirka Michalik
Jirka Michalik
11,573 Points

This is the code we used in the last code challenge. After learning about do...while loops, don't you think this would w

I have trouble with this task ... can you help me ? I still don't see fault in my code. Thank you for your help :)

script.js 
var secret = prompt("What is the secret password?");
do {
  if (secret !== "sesame") {
    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>
Max Karacsony
Max Karacsony
23,928 Points
Max Karacsony
Max Karacsony
23,928 Points

You confused the condition in the while statement: it's still (secret !== sesame) – so you don't need an if statement in the do-block. This should get you through:

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

2 Answers

Jonathan Hamada
Jonathan Hamada
4,810 Points
Jonathan Hamada
Jonathan Hamada
4,810 Points

Just curious, Max can you substitute a while statement? I thought for and while statements were used for loops.

Max Karacsony
Max Karacsony
23,928 Points
Max Karacsony
Max Karacsony
23,928 Points

Hey Jonathan, In this case a replacement wouldn't make much sense. In general I would say that while loops are used for indefinite loops and for loops for finite loops. In this case we can't say how many attempts a user needs to enter the correct password so we use while. If we wanted to log out the items of an array we would use a for loop because we know the length of the array and so the loop would be finite. I hope you get my point ;)

Jonathan Hamada
Jonathan Hamada
4,810 Points

Thanks max

Jirka Michalik
Jirka Michalik
11,573 Points
Jirka Michalik
Jirka Michalik
11,573 Points

Oh thanks max ... have a nic day :)