Build a Quiz Game - Build a Quiz Game

JavaScript
1

Tell us what’s happening:

Why I can’t pass the test 11 and 13? What is my problem?

Your code so far

const questions= [
  {
    category: "Science",
    question: "What is the chemical symbol for water?",
    choices: ["H2O", "O2", "CO2"],
    answer: "H2O"
  },
  {
    category: "Geography",
    question: "Which is the largest continent on Earth?",
    choices: ["Africa", "Asia", "Europe"],
    answer: "Asia"
  },
  {
    category: "History",
    question: "Who was the first President of the United States?",
    choices: ["George Washington", "Thomas Jefferson", "Abraham Lincoln"],
    answer: "George Washington"
  },
  {
    category: "Sports",
    question: "How many players are on a standard soccer team on the field?",
    choices: ["9", "10", "11"],
    answer: "11"
  },
  {
    category: "Technology",
    question: "What does 'HTML' stand for?",
    choices: [
      "Hyper Trainer Marking Language",
      "Hyper Text Markup Language",
      "High Text Markdown Language",
    ],
    answer: "Hyper Text Markup Language"
  }
];

const getRandomQuestion=(arr)=> {
  return arr[Math.floor(Math.random() * arr.length)];
}

const getRandomComputerChoice=(arr)=> {
  return arr[Math.floor(Math.random() * arr.length)];
}

const getResults=(obj,choice)=> {
  if (choice==questions[questions.indexOf(obj)].answer) {
    return "The computer's choice is correct!";
  } 
  else {
    return `The computer's choice is wrong. The correct answer is: ${questions[questions.indexOf(obj)].answer}`;
  }
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Challenge Information:

Build a Quiz Game - Build a Quiz Game
https://www.freecodecamp.org/learn/full-stack-developer/lab-quiz-game/lab-quiz-game

2

in this comparison, do you really need to do questions[questions.indexOf(obj)] to get the correct object? can’t you do something simpler?

If you want to know why it does not wor, indexOf compares things inside the array with === against the argument to find what you are searching, objects can’t be compared like that. Try ({}) === ({}) (round parenthesis arond the object are needed to avoid a syntax error)

3

Oh, I see. Thanks for your answer