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

Sufiyaan Haroon
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.a{fill-rule:evenodd;}techdegree
Sufiyaan Haroon
Full Stack JavaScript Techdegree Student 9,558 Points
Posted by Sufiyaan Haroon
.a{fill-rule:evenodd;}techdegree
Sufiyaan Haroon
Full Stack JavaScript Techdegree Student 9,558 Points

Can my code be better or be writtien easier:

This is my version but what are some changes I can make to make it more easier to read and to make is more simple:

*"guess" is the response

const quizQA = [
  ['Name?', 'sufi'],
  ['How many planets are there?', '8'],
  ['When was javascript created?', '1995']
]
let guess;
let correct = 0;

for (let i = 0; i < quizQA.length; i++) {
  guess = prompt(quizQA[i][0]);
  let answer = quizQA[i][1];
  if (guess.toLowerCase() === answer) {
    correct++;
    console.log(correct);
  }
}


document.querySelector('main').innerHTML = `<h1>You got ${correct}/${quizQA.length} correct!</h1>`;

3 Answers

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

This looks simple and easy to read as is! Good job. :+1:

My only suggestion is that it seems odd to declare "guess" outside the loop but "answer" inside. It might look better with them declared in the same place. Either place will work fine, but since they are only used inside the loop that might be the optimum placement.

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

You could do it more simple but it looks fine for me.

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]) === questions[i][1].) correct++;
}

alert(`Correct Answers ${correct}`);
Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

Looks like there's a stray period on this line:

    if( prompt(questions[i][0]) === questions[i][1].) correct++;
//                                                 ^ here

Also, while simpler, this code is not quite functionally identical to the original.

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

true ;.-) missed that one.