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

Posted by francisobrien
francisobrien
2,131 Points

My prompt() won't prompt... am I missing something here?

let correct = 0;
let answeredCorrectly = [];
let answeredIncorrectly = [];

let quiz = [
  ["What is the meaning of life?", 42],
  ["What color is Donald Trump?", "Orange"],
  ["Who is the richest man in the world?", "Jeff Bezos"]
];

for (let item = 0; item === quiz.length; item++) {
  let question = quiz[item][0];
  let answer = quiz[item][1];
  let userResponse = parseInt( prompt(question) );

  if (userResponse === answer) {
    correct++;
    answeredCorrectly.push(question);
  } else {
    answeredIncorrectly.push(question);
  }
}

document.querySelector("p").innerHTML = `You got ${correct} out of 3 correct! <br>You got these right: ${answeredCorrectly.join(', ')}. <br> And these wrong: ${answeredIncorrectly.join(', ')}.`;
Xavier Ritch
Xavier Ritch
11,099 Points

It seems you stored your prompt in a variable thats a part of the local scope of your for loop. Which should be fine, but in order for the prompt to run, that variable needs to be called somewhere in your code, which did not happen. In order for your quiz app to run the way I think you intend it to, i'd recommend you declare the userResponse, answer, and question variables in global scope outside of your for loop and then call on them in the loop. Hope this helps.

2 Answers

Blake Larson
Blake Larson
13,014 Points
Blake Larson
Blake Larson
13,014 Points

item === quiz.length <-- your for loop never runs. You want the for loop to run while item is less than quiz.length.

francisobrien
francisobrien
2,131 Points
francisobrien
francisobrien
2,131 Points

Thanks Blake. Guess I should have spotted that one! Hm.