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 Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 2

Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

quiz challenge

My code does.nt run.I will paste the code.Need help please??

var  questions = [
    ['How many states are in the United States?', 50],
    ['How many continents are there?', 7],
    ['How many legs does an insect have?', 6]
var correctAnswers = 0;
var question;
var answer;
var response;
var html;

function print(message) {
    var outputDiv = document.getElementById('output');
    outputDiv.innerHTML = message;


for ( var i = 0; i < questions.lenght; i += 1) {
    question = questions[i][0];
    answer = questions[i][1];
    response = parseInt(prompt(question));
    if ( response === answer ) {
        correctAnswers += 1;

html = "You got " + correctAnswers + " question(s) right.";

1 Answer

for ( var i = 0; i < questions.lenght; i += 1) {

Should be

for ( var i = 0; i < questions.length; i += 1) {

You have simply misspelled length as far as I can tell. Easy mistake to make and hard to spot. These little errors always pop up in my coding and I have to take a break then come back to it before I finally spot what is going on.

Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

Hi Graham,Thanks so much.Its awkward to tell you the least.Well you help me out a lot thanks!!!

Van Jayson Pelayo
Van Jayson Pelayo
5,263 Points

I was trying to find the bug for so long! I first thought it was length too but i misspelt it aswell >:(

Good find!