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

Confusing loop results

The challenge asks you to turn this while loop into a do while loop. My question is about both types of loop.

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.");

What confuses me about this loop is that when I enter a word that is not "sesame" it loops twice and then displays the document.write string anyway. I can't figure out why the while loop is breaking and running the document.write().

Then when I change it to a do...while loop like this (which passed the challenge)

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

The document.write string is displayed no matter what I enter in the prompt.

Am I missing something after the while ( secret !== "sesame" ) statement that would actually make the loop keep running until "sesame" is entered?

1 Answer

Steven Parker
Steven Parker
229,783 Points

I tried both versions, and they seem to work correctly. Both of them keep asking for input as long as I answer with something other than "sesame". And when I give "sesame", they both end and display the message.

Perhaps try it with a different browser?