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JavaScript JavaScript Arrays Multidimensional Arrays Improve the Quiz – One Solution

Posted by Axel Lancieri
.a{fill-rule:evenodd;}techdegree seal-36
Axel Lancieri
Front End Web Development Techdegree Graduate 17,291 Points

My solution

Hey!

Wanted to share my own solution as I see I took a different approach than the teacher and other people's solution here, might not be the DRYIEST / best way to make it function but it gets the job done.

Just wanted to add my grain of salt. Good luck to everyone attempting this!! Not an easy task.

// 1. Create a multidimensional array to hold quiz questions and answers
let quizQuestions = [
  ['How much is 2 by 2', 'How much is 4 by 2', 'How much is 5 by 2'],
  ['4', '8', '10'],
];
let correctAnswerDisplay = []; 
let incorrectAnswerDisplay = [];

// 2. Store the number of questions answered correctly
let answers = 0;
/* 
  3. Use a loop to cycle through each question
      - Present each question to the user
      - Compare the user's response to answer in the array
      - If the response matches the answer, the number of correctly
        answered questions increments by 1
*/
for (let i = 0;i < 3; i++) {
  let answerQuiz = prompt(quizQuestions[0][i]);

  if (answerQuiz === quizQuestions[1][i]) {
      answers++;
      correctAnswerDisplay.push(quizQuestions[0][i]);
  } else {
      incorrectAnswerDisplay.push(quizQuestions[0][i]);
    }
}
let  rdyCorrectAnswerDisplay = ` `;
// 4. Display the number of correct answers to the user
  for (let l = 0;l < correctAnswerDisplay.length;l++) {
     rdyCorrectAnswerDisplay += `<li>${correctAnswerDisplay[l]}</li>`;
  }
let rdyIncorrectAnswerDisplay = ` `;
  for (let x = 0;x < incorrectAnswerDisplay.length;x++) {
    rdyIncorrectAnswerDisplay += `<li>${incorrectAnswerDisplay[x]}</li>`;
  }

let html = `<h2>Amount of correct answers: ${answers}</h2>

<h3> Your correct answers: </h3>

    <ol>
      ${rdyCorrectAnswerDisplay}
    </ol>

<h3> Your incorrect answers: </h3>

    <ol>
      ${rdyIncorrectAnswerDisplay}
    </ol>`;

document.querySelector('main').innerHTML = html;