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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 1

Sarah Jee Watson
.a{fill-rule:evenodd;}techdegree seal-36
Sarah Jee Watson
UX Design Techdegree Graduate 28,185 Points

It looks ok, but nothing pops up in preview?

var correctAnswer = 0;

var quiz = [
['What is 1+1?', '2'],
['Which city has the largest population?', 'Toyko'],
['Who is the godfather of soul?', 'James Brown']

function print(message) {

for (i=0; i < quiz.length; i++) {

    var guess = prompt (quiz[i][0]);

    if (guess.toLowerCase() === quiz[i][1]) {
      correctAnswer += 1; 
  } else {
    alert('Wrong answer!');


print('You got ' + correctAnswer + ' questions right!');

1 Answer

you forgot to init the var i in your for loop:

for(var i =0; i < quiz.length; i++){
//code for loop here