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

Zachary Pratt
Zachary Pratt
2,395 Points
Posted by Zachary Pratt
Zachary Pratt
2,395 Points

While Loop "sesame"

Why do I have to add another prompt. What is wrong with this code?

app.js 
var 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="app.js"></script>
</body>
</html>

1 Answer

Gunhoo Yoon
Gunhoo Yoon
5,027 Points
Gunhoo Yoon
Gunhoo Yoon
5,027 Points

Because you want to ask multiple times in case of failures.

All you need to know is prompt only asks once and return whatever response user entered. If you want to ask 100 times you need to call prompt 100 times. This is why you want to use while loop to save 100 times of typing prompt.