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

When i prompt the questions, all of the questions i my array and answers pop up in every PROMPT box?

this is my code, its just like the video

const questions = [ ['What is the capitol of California','sacramento'], ['How many states are the in the USA?', '50'], ['How many fingers in the regular hand?', '10'] ];

let correctAnswers = 0;

for (let i = 0; i < questions.length; i++) { let question = questions[i][0]; let answer = questions[i][1]; let response = prompt(questions);

if (response === answer) {
    correctAnswers++
}

}

1 Answer

Thomas Lian Ødegaard
Thomas Lian Ødegaard
9,539 Points

It shows all the questions, because you put the whole array in the prompt method instead of a single question.

This:

let response = prompt(questions);

Should be changed to this:

let response = prompt(question);

The code will therefore look like this:

const questions = [ ['What is the capitol of California','sacramento'], ['How many states are the in the USA?', '50'], ['How many fingers in the regular hand?', '10'] ];

let correctAnswers = 0;

for (let i = 0; i < questions.length; i++) { 
  let question = questions[i][0]; 
  let answer = questions[i][1]; 
  let response = prompt(question);

  if (response === answer) {
    correctAnswers++
    console.log(correctAnswers);
  }
}

I would prefer using a foreach method on the array instead of a for loop:

// Go through each question in the questions array
questions.forEach(question => {
  // Get the correct answer from the array
  let answer = question[1];
  // Show the prompt with the question and get the response from the user
  let response = prompt(question[0]);
  // Check if the user response is the same as the answer from the array
  if (response === answer) {
    // Add 1 to the "correctAnswers" variable if the answer is correct 
    correctAnswers++
  }  
});