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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops A Closer Look At Loop Conditions

Posted by Stanley Wilkins
Stanley Wilkins
685 Points

What is the prompt here?

I think I am close but what is the prompt we have to put inside the while loop? Why do I get error?

app.js 
var secret = prompt("What is the secret password?");

document.write("You know the secret password. Welcome.");

while (secret!=="Welcome") {
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="app.js"></script>
</body>
</html>

1 Answer

Tobias Helmrich
Tobias Helmrich
31,603 Points
Tobias Helmrich
Tobias Helmrich
31,603 Points

Hey Stanley,

a prompt is like an alert window that pops up and asks the user for an input. The reason why you're getting an error is because you have to prompt the user to enter the "secret password" until he knows the right word which is "sesame" in this case (not "Welcome"). So you have to put your document.write after the loop because then the user had the right word and the loop exited. Instead of the document.write statement just prompt the user inside of the loop so it will ask the user for the secret password as long as he doesn't type in "sesame".

But you can keep your first prompt outside of the loop as you need to have a first value to compare to the condition of the while loop.

Like so:

var secret = prompt("What is the secret password?");

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

document.write("You know the secret password. Welcome.");

I hope that helps you to find the solution, if not or if you have further questions feel free to ask, good luck! :)

Stanley Wilkins
Stanley Wilkins
685 Points

I tried this one except for putting document.write() after the loop and naturally it didn't work. I got it now. Thanks for help.