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

Posted by tomssleiners
tomssleiners
1,152 Points

Hi, I can't seem to find any syntax error with this snippet, could you please help me out?

There was an error with your code: SyntaxError: Parse error

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

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

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

do ( secret === 'sesame' ) {
  document.write("You know the secret password. Welcome."); 
} while ( secret !== 'sesame' ) {
  prompt("What is the secret password?");    
}
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
231,269 Points
Steven Parker
Steven Parker
231,269 Points

It looks like you're part way between converting a while into do...while.

  • there won't be any conditional expression after the "do"
  • you will only declare secret before the loop
  • all of the other code lines will be inside the block between "do" and "while"
  • you'll need to assign the result of calling prompt to secret
  • you will only call prompt once — inside the loop
  • there will not be a code block after the "while" (just a semicolon)
tomssleiners
tomssleiners
1,152 Points

Thanks Steven, it took me a while to understand, but eventually I did and now it makes sense.