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

Matt Gaboury
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Matt Gaboury
Full Stack JavaScript Techdegree Student 1,540 Points
Posted by Matt Gaboury
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Matt Gaboury
Full Stack JavaScript Techdegree Student 1,540 Points

Do while loop

Do I just change the "while" to "do" and then add a "while" before the "document.write"?

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

Ken Stone
Ken Stone
29,703 Points
Ken Stone
Ken Stone
29,703 Points

By switching to a do...while you are able to remove the duplicate prompt code and will be better adhering to D.R.Y. coding practices.

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