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 Solution

Robert Rydlewski
Robert Rydlewski
3,828 Points

I followed the code from the video but it doesn't work.

How come I have the same code from the video but in my code, there is an error in for loop for '<ol>' This is the code ``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; var correct = []; var wrong; [];

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

function buildList(arr) { var listHTML = '<ol>' ; for ( var i = 0; i < arr.length; i += 1 ) { listHTML += '<li>' + arr[i] + '</li>'; } listHTML += '</ol>'; return listHTML; } for (var i = 0; i < questions.length; i += 1) { question = questions[i][0]; answer = questions[i][1]; response = prompt(question); response = parseInt(response); if (response === answer) { correctAnswers += 1; correct.push(question); } else { wrong.push(question); } }

html = "You got " + correctAnswers + " question(s) right." html += '<h2> You got these questions correct:</h2>'; html += buildList(correct); html += '<h2>You got these qestions wrong:</h2>'; html += buildList(wrong); print(html);``

2 Answers

Check your declaration of variable wrong. You have a semicolon where there should be an assignment operator.

This:

var wrong; [];

should be:

var wrong = [];
Robert Rydlewski
Robert Rydlewski
3,828 Points

Yes, That was it. The bug was showing me an error with the loop on my google chrome tool. I was confused and was looking in the wrong place. Thank you very much. :)

Jamie Reardon
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Jamie Reardon
Treehouse Project Reviewer

What is the error? The console provides you a line number to check out where the error may be. You need another ` wrapped around your code for markdown.

Robert Rydlewski
Robert Rydlewski
3,828 Points

The error was pointing to the loop. But end up being an error with syntax error ( declaration of variable wrong ). Thank any way. Enjoy your day.