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

Posted by Ben Mohammad
Ben Mohammad
5,659 Points

why don't my pop up box work (it did before)?

Im stuck on why my codes not executing.... '''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;

function print(message) { document.write(message); }

function buildList (arr){

var listHTML = "<ol>"; for(var = 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 questions correct</h2>; html += buildList(correct); html += '<h2>You got these questions wrong:</h2>; html += buildList(wrong);

print(html);

1 Answer

Tamas Gonda
Tamas Gonda
7,332 Points
Tamas Gonda
Tamas Gonda
7,332 Points

Hey Ben! I've looked into your code! I have found a few typos, or mistakes. I will write down all that I've found, so spoiler alert ahead! If you want to figure it out by yourself read my comment carefully from now!

  • So first, inside the listHTML variable, where the loop is, you haven't specified the var i. It's simply says var = 0.
  • At the beginning of the program you havent declared empty arrays to collect correct and wrong answers, what you will print out later on the page.
  • At the very bottom of your code, where you print out the final message, you missed apostrophe I think twice, what completely stops your code to run, as it's all became one long string. So look for the closing h2 tags. Have a good day!