Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Alex Thomas
Alex Thomas
4,247 Points
Posted by Alex Thomas
Alex Thomas
4,247 Points

do while loop not working

Hi, the code's not running. Can someone show me what i did wrong?

var randomNumber = getRandomNumber(10); var guess; var guessCount = 0; var correctGuess = false; function getRandomNumber( upper ) { var num = Math.floor(Math.random() * upper) + 1; return num; }

do { guess = prompt(' I am thinking of a number between 1 and 10. What is it?'); guessCount +=1; if (parseInt(guess) === randomNumber) { correctGuess = true; } } while( ! correctGuess ) document.write("You guessed the number!<h1>"); document.write("It took you + guessCount + "tries to guess the number " + randomNUmber");

Thomas Doyle-Engler
Thomas Doyle-Engler
6,005 Points
Thomas Doyle-Engler
Thomas Doyle-Engler
6,005 Points 
var randomNumber = getRandomNumber(10); 
var guess;
var guessCount = 0;
var correctGuess = false; 

function getRandomNumber( upper ) {
  var num = Math.floor(Math.random() * upper) + 1; 
  return num; }

do { guess = prompt(' I am thinking of a number between 1 and 10. What is it?'); 
    guessCount +=1; 
    if (parseInt(guess) === randomNumber) { 
      correctGuess = true; 
      } 
   } while( ! correctGuess ) 

   document.write("<h1>You guessed the number!</h1>"); 
    document.write("It took you " + guessCount + " tries to guess the number " + randomNumber);
  1. You were missing a <h1> in your first document.write and you need to add the / in </h1> to close it.
  2. In the second document.write you were missing a few " marks in places and you had a typo in random number.

That is all that needed to be done to get it working, hope I helped.

1 Answer

Steven Parker
Steven Parker
229,786 Points
Steven Parker
Steven Parker
229,786 Points

It looks like you have some misplaced punctuation (and a misspelling).

On your very last line you have this:

document.write("It took you + guessCount + "tries to guess the number " + randomNUmber");

But you probably meant to write this:

document.write("It took you " + guessCount + " tries to guess the number " + randomNumber);