why this doesnt work?

Question

// 1. Create a multidimensional array to hold quiz questions and answers
const questionAnswer = [
['What is your name?', 'Max'],
 ['What is your hobby?', 'Coding'],
 ['What is your shoe size?', '45'],
];
const question1 = prompt( questionAnswer[0][0])
const question2 = prompt( questionAnswer[1][0])
const question3 = prompt( questionAnswer[2][0])
let correctAnswers = 0;
// 2. Store the number of questions answered correctly
for (let i = 0; i> questionAnswer.length; i++){
if (question1 === questionAnswer[0][1] ) {
correctAnswers++;
} else if (question2 === questionAnswer[1][1] ) {
correctAnswers++;
} else if (+question3 === questionAnswer[2][1])  {
correctAnswers++;
}
}
/* 
  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
*/
// 4. Display the number of correct answers to the user
document.querySelector('main').innerHTML= You answered ${correctAnswers} correct questions.

Steven Parker · Accepted Answer

One issue I spotted offhand:
In this comparison :point_right: +question3 === questionAnswer[2][1]
The "+" symbol at the start converts question3 into a number, but the answer stored in questionAnswer[2][1] is a string.  The type-sensitive equality operator (===) will not match a number to a string even if the value is correct.  So you either need a standard comparison (==), or to not convert the answer to a number. or to store the correct answer as a number instead of a string.
For future questions, use Markdown formatting (https://teamtreehouse.com/library/code) to preserve the code's appearance.  You may also want to take Markdown formatting (https://teamtreehouse.com/library/code) to preserve the code's appearance, and perhaps this one about sharing a snapshot (https://teamtreehouse.com/library/previews-and-snapshots) of your workspace.

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sasha shveps

sasha shveps

why this doesnt work?

1 Answer

Steven Parker

Steven Parker