Quiz-App/script.js at main · Iswarya-S26/Quiz-App · GitHub

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const question = [
  {
    question: "What is the capital of India?",
    answers: [
      { text: "Mumbai", correct: false },
      { text: "New Delhi", correct: true },
      { text: "Kolkata", correct: false },
      { text: "Chennai", correct: false },
    ],
  },
  {
    question: "Which is the national animal of India?",
    answers: [
      { text: "Lion", correct: false },
      { text: "Tiger", correct: true },
      { text: "Elephant", correct: false },
      { text: "Peacock", correct: false },
    ],
  },
  {
    question: "Who is known as the 'Father of the Nation' in India?",
    answers: [
      { text: "Jawaharlal Nehru", correct: false },
      { text: "Subhas Chandra Bose", correct: false },
      { text: "Mahatma Gandhi", correct: true },
      { text: "Sardar Patel", correct: false },
    ],
  },
  {
    question: "Which is the national flower of India?",
    answers: [
      { text: "Rose", correct: false },
      { text: "Lotus", correct: true },
      { text: "Sunflower", correct: false },
      { text: "Marigold", correct: false },
    ],
  },
  {
    question: "Which is the national sport of India?",
    answers: [
      { text: "Cricket", correct: false },
      { text: "Hockey", correct: true },
      { text: "Football", correct: false },
      { text: "Badminton", correct: false },
    ],
  },
];


const questionElement = document.getElementById("question");
const answerButtons = document.getElementById("answer-button");
const nextButton = document.getElementById("next-btn");

let currentQuestionIndex = 0;
let score = 0;

function startQuiz() {
  currentQuestionIndex = 0;
  score = 0;
  nextButton.innerHTML = "Next";
  showQuestion();
}

function showQuestion() {
  resetState();
  let currentQuestion = question[currentQuestionIndex];
  let questionNo = currentQuestionIndex + 1;
  questionElement.innerHTML = questionNo + "." + currentQuestion.question;

  currentQuestion.answers.forEach((answer) => {
    const button = document.createElement("button");
    button.innerHTML = answer.text;
    button.classList.add("btn");
    answerButtons.appendChild(button);
    if (answer.correct) {
      button.dataset.correct = answer.correct;
    }
    button.addEventListener("click", selectAnswer);
  });
}

function resetState() {
  nextButton.style.display = "none";
  while (answerButtons.firstChild) {
    answerButtons.removeChild(answerButtons.firstChild);
  }
}

function selectAnswer(e) {
  const selectedBtn = e.target;
  const isCorrect = selectedBtn.dataset.correct === "true";
  if (isCorrect) {
    selectedBtn.classList.add("correct");
    score++;
  } else {
    selectedBtn.classList.add("inCorrect");
  }
  Array.from(answerButtons.children).forEach((button) => {
    if (button.dataset.correct === "true") {
      button.classList.add("correct");
    }
    button.disabled = true;
  });
  nextButton.style.display = "block";
}

function showScore() {
  resetState();
  questionElement.innerHTML = `You scored ${score} out of ${question.length}!`;
  nextButton.innerHTML = "play Again";
  nextButton.style.display = "block";
}

function handleNextButton() {
  currentQuestionIndex++;
  if (currentQuestionIndex < question.length) {
    showQuestion();
  } else {
    showScore();
  }
}

nextButton.addEventListener("click", () => {
  if (currentQuestionIndex < question.length) {
    handleNextButton();
  } else {
    startQuiz();
  }
});

startQuiz();