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JavaScript JavaScript Arrays Multidimensional Arrays Build a Quiz Challenge – One Solution

Alex Hort-Francis
Alex Hort-Francis
17,074 Points
Posted by Alex Hort-Francis
Alex Hort-Francis
17,074 Points

My solution

const questions = [
  [
    'Which method adds an element to the end of an array?', 
    'push()'
  ],
  [
    'Which method adds an element to the start of an array?',
    'unshift()'
  ],
  [
    'Which method determines whether an array includes a certain value among its entries, returning true or false?',
    'indexOf()'
  ]
];

function makeOL(arr) {
  let html = '<ol>';
  for (let i = 0; i < arr.length; i++) {
    html += `<li>${arr[i][0]}</li>`;
  }
  return html += '</ol>';
}

let score = 0;
const wrongAnswers = [];
const correctAnswers = [];

for (let i = 0; i < questions.length; i++) {
  if (prompt(questions[i][0]) === questions[i][1]) {
    score++;
    correctAnswers.push(questions[i]); 
  } else {
    wrongAnswers.push(questions[i]);
  }
}

document.querySelector('main').innerHTML = `<h1>You got ${score} correct anwsers!</h1>
                                            <h2>You got these questions right:</h2>
                                            ${makeOL(correctAnswers)}
                                            <h2>You got these questions wrong:</h2>
                                            ${makeOL(wrongAnswers)}
                                            `;

Seems to work, and I made a cheeky function, too.

:)

Patrick Koch
Patrick Koch
40,496 Points
Patrick Koch
Patrick Koch
40,496 Points

well nice work, now my minimal approach: ;-) 

let questions = [
    ['Question 1', 'Answer1'],
    ['Question 2', 'Answer2'],
    ['Question 3', 'Answer3'],
]

let correct = 0;

for(let i = 0; i < questions.length; i++){
    if( prompt(questions[i][0]).toLowerCase() === questions[i][1].toLowerCase()) correct++;
}

alert(`Correct Answers ${correct}`);