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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 2 Solution

Robert Rydlewski
Robert Rydlewski
3,827 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
3,827 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
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.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
3,827 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.