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

Irfan Hussain
PLUS
Irfan Hussain
Courses Plus Student 6,593 Points
Posted by Irfan Hussain
Irfan Hussain
Courses Plus Student 6,593 Points

Why do while accept same value twice.

On Do while loop project we ask question about choose number between 1 to 10. But if you repeat same number you will not get result.

In my wordspace i change value between 1 to 2. If the computer the value in first attempt this program work fine, otherwise prompt message keep pop up.

script.js 
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.");
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

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

One reason the "do" style loop is good here is so you do not have to ask the question in two places.

Did you have trouble creating the "do" loop? It would look something like this:

:warning: SPOILER ALERT

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