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

Victor Gordian
Victor Gordian
4,656 Points
Posted by Victor Gordian
Victor Gordian
4,656 Points

Its not showing the right answers 

var questions = [
  ['What color is the sky', 'blue'],
  ['whats the begining of the Aplhabet', 'a'],
  ['when its hot people usually like to eat what?', 'ice cream']

];
var correctA = 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.length; i += 1){
  question = questions[i][0]; 
  answer = questions[i][1];
  response = parseInt(prompt(question));
   if (response === answer) {
    correctA += 1;
   }


}
html = "You got " + correctA  + " question(s) right."
print(html);

1 Answer

Matthew Saul
Matthew Saul
11,354 Points

The reason it's not working is related to the parseInt() function. Each time you're running that in your code it is coming up with this:

parseInt("blue");
NaN

NaN = Not a Number

So, if you simply just write your code where you omit parseInt or write another if statement to include parseInt so an answer can still be a number, you'll be fine. 

for (var i = 0; i < questions.length; i += 1){
  question = questions[i][0]; 
  answer = questions[i][1];
  response = prompt(question);
// instead of // response = parseInt(prompt(question));
   if (response === answer) {
    correctA += 1;
   }
Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

Hi Matthew Saul, I've updated your answer to include code blocks to make it easier to read, and hopefully be accepted as the best answer!