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index.js
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// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let questions = [];
// let currentQuestionIndex = 0;
// let score = 0;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.textContent = currentQuestion.question;
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option;
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// if (currentQuestionIndex < questions.length - 1) {
// nextButton.style.display = "block";
// } else {
// showScore();
// }
// }
// function showScore() {
// quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "") {
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// displayQuestion();
// });
// });
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let questions = [];
// let currentQuestionIndex = 0;
// let score = 0;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.textContent = currentQuestion.question;
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option;
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// if (currentQuestionIndex < questions.length - 1) {
// nextButton.style.display = "block";
// } else {
// showScore();
// }
// }
// function showScore() {
// quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "") {
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// displayQuestion();
// });
// });
// oNE QUESTION BEING DISPLAYED NICELY
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let questions = [];
// let currentQuestionIndex = 0;
// let score = 0;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.textContent = currentQuestion.question;
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option;
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// if (currentQuestionIndex < questions.length - 1) {
// nextButton.style.display = "block";
// } else {
// showScore();
// }
// }
// function showScore() {
// quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "") {
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// displayQuestion();
// });
// });
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false; // To keep track if the quiz has started
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.textContent = currentQuestion.question;
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option;
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function showScore() {
// quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// if (currentQuestionIndex < questions.length) {
// displayQuestion();
// } else {
// showScore();
// }
// });
// });
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.textContent = currentQuestion.question;
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option;
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function showScore() {
// // quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// if (currentQuestionIndex < questions.length) {
// displayQuestion();
// } else {
// showScore();
// }
// });
// });
// QUESTION STAEMENT AND OPTIONS GETTING DISPLAYED ON SEPARATE LINES
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.innerHTML = currentQuestion.question.replace(/\n/g, "<br>"); // Add line breaks
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option.replace(/\n/g, ""); // Remove line breaks from options
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// score++;
// resultElement.textContent = "Correct!";
// } else {
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function showScore() {
// // quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// if (currentQuestionIndex < questions.length) {
// displayQuestion();
// } else {
// showScore();
// }
// });
// });
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// resetOptionColors(); // Reset option button colors before displaying the new question
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.innerHTML = currentQuestion.question.replace(/\n/g, "<br>"); // Add line breaks
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option.replace(/\n/g, ""); // Remove line breaks from options
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("click", selectAnswer);
// optionButton.addEventListener("mouseover", highlightOption); // Highlight on mouseover
// optionButton.addEventListener("mouseout", resetOptionColor); // Reset color on mouseout
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// event.target.style.backgroundColor = "green"; // Change color to green for correct answer
// score++;
// resultElement.textContent = "Correct!";
// } else {
// event.target.style.backgroundColor = "red"; // Change color to red for wrong answer
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// showNextButton();
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function resetOptionColors() {
// // Reset all option button colors to default white when displaying a new question
// const optionButtons = document.querySelectorAll(".option");
// optionButtons.forEach(button => (button.style.backgroundColor = "#fff"));
// }
// // Highlight option on mouseover
// function highlightOption(event) {
// event.target.style.backgroundColor = "blue";
// }
// // Reset option color on mouseout
// function resetOptionColor(event) {
// event.target.style.backgroundColor = "#fff";
// }
// function showScore() {
// // quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// if (currentQuestionIndex < questions.length) {
// displayQuestion();
// } else {
// showScore();
// }
// });
// });
// WORKING FINE, IT CAN HIGHLIGHT THE OPTION ON HOVER AND CHANGE THE COLOUR TO RED OR GREEN ON BEING CORRCT OR INCORRECT
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.innerHTML = currentQuestion.question.replace(/\n/g, "<br>"); // Add line breaks
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option.replace(/\n/g, ""); // Remove line breaks from options
// optionButton.dataset.option = index + 1;
// // Add event listeners for hover and click on each option button
// optionButton.addEventListener("mouseover", highlightOption);
// optionButton.addEventListener("mouseout", resetOptionColor);
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// }
// function highlightOption(event) {
// // Change color to blue on hover
// event.target.style.backgroundColor = "blue";
// }
// function resetOptionColor(event) {
// // Reset the background color to white when the mouse moves away
// event.target.style.backgroundColor = "#fff";
// }
// function selectAnswer(event) {
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// event.target.style.backgroundColor = "green"; // Change color to green for correct answer
// score++;
// resultElement.textContent = "Correct!";
// } else {
// event.target.style.backgroundColor = "red"; // Change color to red for wrong answer
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// // Remove the event listeners for hover and click to keep the colors permanent
// event.target.removeEventListener("mouseover", highlightOption);
// event.target.removeEventListener("mouseout", resetOptionColor);
// event.target.removeEventListener("click", selectAnswer);
// // Disable all option buttons to prevent further selection
// const optionButtons = document.querySelectorAll(".option");
// optionButtons.forEach(button => button.removeEventListener("click", selectAnswer));
// showNextButton();
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function showScore() {
// // quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// if (currentQuestionIndex < questions.length) {
// displayQuestion();
// } else {
// showScore();
// }
// });
// });
// THIS CODE IS GENERATING THE SAME QUIZ AGAIN FOR THE USER TO REATTEMPT THE SAME QUIZ
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// const submitButton = document.getElementById("submit"); // New Submit button
// const restartButton = document.getElementById("restart"); // New Restart Quiz button
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// let quizEnded = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// quizEnded = false; // Reset quizEnded flag
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.innerHTML = currentQuestion.question.replace(/\n/g, "<br>"); // Add line breaks
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option.replace(/\n/g, ""); // Remove line breaks from options
// optionButton.dataset.option = index + 1;
// // Add event listeners for hover and click on each option button
// optionButton.addEventListener("mouseover", highlightOption);
// optionButton.addEventListener("mouseout", resetOptionColor);
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// if (currentQuestionIndex === questions.length - 1 && !quizEnded) {
// nextButton.style.display = "none";
// submitButton.style.display = "block";
// } else {
// nextButton.style.display = "block";
// submitButton.style.display = "none";
// }
// }
// function highlightOption(event) {
// // Change color to blue on hover
// event.target.style.backgroundColor = "blue";
// }
// function resetOptionColor(event) {
// // Reset the background color to white when the mouse moves away
// event.target.style.backgroundColor = "#fff";
// }
// function selectAnswer(event) {
// if (quizEnded) return; // Prevent further selection after quiz ends
// const selectedOptionIndex = parseInt(event.target.dataset.option);
// const currentQuestion = questions[currentQuestionIndex];
// const isCorrect = currentQuestion.correctAnswerIndex === selectedOptionIndex;
// if (isCorrect) {
// event.target.style.backgroundColor = "green"; // Change color to green for correct answer
// score++;
// resultElement.textContent = "Correct!";
// } else {
// event.target.style.backgroundColor = "red"; // Change color to red for wrong answer
// resultElement.textContent = "Oops! It's the wrong answer.";
// }
// // Remove the event listeners for hover and click to keep the colors permanent
// event.target.removeEventListener("mouseover", highlightOption);
// event.target.removeEventListener("mouseout", resetOptionColor);
// event.target.removeEventListener("click", selectAnswer);
// // Disable all option buttons to prevent further selection
// const optionButtons = document.querySelectorAll(".option");
// optionButtons.forEach(button => button.removeEventListener("click", selectAnswer));
// if (currentQuestionIndex === questions.length - 1) {
// quizEnded = true;
// showSubmitButton();
// } else {
// showNextButton();
// }
// }
// function showNextButton() {
// nextButton.style.display = "block";
// }
// function showSubmitButton() {
// submitButton.style.display = "block";
// }
// function showScore() {
// // quizContainer.classList.add("hidden");
// resultElement.textContent = `Your Score: ${score} out of ${questions.length}`;
// restartButton.style.display = "block"; // Display the Restart Quiz button after showing the score
// }
// function restartQuiz() {
// currentQuestionIndex = 0;
// score = 0;
// quizEnded = false;
// displayQuestion();
// resultElement.textContent = ""; // Clear the previous score text
// restartButton.style.display = "none"; // Hide the Restart Quiz button again
// }
// startButton.addEventListener("click", () => {
// const topic = topicInput.value;
// if (topic.trim() !== "" && !hasStarted) {
// hasStarted = true;
// fetchQuestionsFromBackend(topic);
// quizContainer.classList.remove("hidden");
// document.getElementById("topic-input").classList.add("hidden");
// }
// });
// nextButton.addEventListener("click", () => {
// currentQuestionIndex++;
// displayQuestion();
// });
// submitButton.addEventListener("click", () => {
// showScore();
// });
// restartButton.addEventListener("click", () => {
// restartQuiz();
// });
// });
// document.addEventListener("DOMContentLoaded", () => {
// const startButton = document.getElementById("start");
// const quizContainer = document.getElementById("quiz");
// const topicInput = document.getElementById("topic");
// const questionElement = document.getElementById("question");
// const optionsContainer = document.getElementById("options");
// const resultElement = document.getElementById("result");
// const nextButton = document.getElementById("next");
// const submitButton = document.getElementById("submit"); // New submit button
// const restartButton = document.getElementById("restart"); // New restart button
// let currentQuestionIndex = 0;
// let questions = [];
// let score = 0;
// let hasStarted = false;
// let isQuizFinished = false;
// async function fetchQuestionsFromBackend(topic) {
// try {
// const response = await fetch(`/api/getQuestions?topic=${topic}`);
// const data = await response.json();
// questions = data.questions;
// currentQuestionIndex = 0;
// score = 0;
// isQuizFinished = false;
// displayQuestion();
// } catch (error) {
// console.error("Error fetching questions:", error);
// }
// }
// function displayQuestion() {
// if (isQuizFinished) {
// showScore();
// return;
// }
// const currentQuestion = questions[currentQuestionIndex];
// questionElement.innerHTML = currentQuestion.question.replace(/\n/g, "<br>");
// optionsContainer.innerHTML = "";
// currentQuestion.options.forEach((option, index) => {
// const optionButton = document.createElement("button");
// optionButton.classList.add("option");
// optionButton.textContent = option.replace(/\n/g, "");
// optionButton.dataset.option = index + 1;
// optionButton.addEventListener("mouseover", highlightOption);
// optionButton.addEventListener("mouseout", resetOptionColor);
// optionButton.addEventListener("click", selectAnswer);
// optionsContainer.appendChild(optionButton);
// });
// resultElement.textContent = "";
// nextButton.style.display = "none";
// submitButton.style.display = "none"; // Hide the Submit button
// }
// function highlightOption(event) {
// event.target.style.backgroundColor = "blue";
// }
// function resetOptionColor(event) {
// event.target.style.backgroundColor = "#fff";
// }
// function selectAnswer(event) {
// if (isQuizFinished) {
// return;