Coding-Freshers/quiz2.html at master · Jhil20/Coding-Freshers · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Quiz</title>
    <link rel="stylesheet" href="/quiz.css">
</head>
<body>
    <!-- <form action="/quiz2" method="post"> -->
    <div class="app">
        <h1>Quiz On Basics Of C</h1>
        <div class="quiz" id="quiz-container">
            <div id="user-id-section">
                <label for="user-id">Enter Your User ID:</label>
                <input type="text" id="user-id" name="user-id">
                <button onclick="startQuiz()">Start Quiz</button>
            </div>
            <h2 id="question" style="display: none;">Question goes here</h2>
            <div id="answer-buttons" style="display: none;">
                <!-- Answer buttons will be added dynamically -->
            </div>
            <button id="next-btn" style="display: none;">Next</button>
            <div id="score-container" style="display: none;"></div>
        </div>
    </div>
<!-- </form> -->
    <script>
        const questions = [
            {
                question: "Who invented C++?",
                answers: [
                    { text: "Dennis Ritchie", correct: false },
                    { text: "Ken Thompson", correct: false },
                    { text: "Brian Kernighan", correct: false },
                    { text: "Bjarne Stroustrup", correct: true },
                ]
            },
            {
                question: "What is C++?",
                answers: [
                    { text: "C++ is an object-oriented programming language", correct: false },
                    { text: "C++ is a procedural programming language", correct: false },
                    { text: "C++ supports both procedural and object-oriented programming language", correct: true },
                    { text: "C++ is a functional programming language", correct: false },
                ]
            },
            {
                question: "Which of the following is the correct syntax of including a user-defined header files in C++?",
                answers: [
                    { text: "#include [userdefined]", correct: false },
                    { text: "#include “userdefined”", correct: true },
                    { text: "#include <userdefined.h>", correct: false },
                    { text: "#include <userdefined>", correct: false },
                ]
            },
            {
                question: "Which of the following is used for comments in C++?",
                answers: [
                    { text: "/* comment */", correct: false },
                    { text: "// comment */", correct: false },
                    { text: "// comment", correct: true },
                    { text: "both // comment or /* comment */", correct: false },
                ]
            },
            {
                question: "Which of the following user-defined header file extension used in C++?",
                answers: [
                    { text: "hg", correct: false },
                    { text: "cpp", correct: false },
                    { text: "h", correct: true },
                    { text: "hf", correct: false },
                ]
            }
        ];
        const userIdInput = document.getElementById('user-id');
        const quizContainer = document.getElementById('quiz-container');
        const userIdSection = document.getElementById('user-id-section');
        const questionElement = document.getElementById("question");
        const answerButtons = document.getElementById("answer-buttons");
        const nextButton = document.getElementById("next-btn");
        let quizStarted = false;
        let currentQuestionIndex = 0;
        let score = 0; // Declare score as a global variable

        function startQuiz() {
            const userId = userIdInput.value.trim();
            if (userId === "") {
                alert("Please enter your User ID to start the quiz.");
                return;
            }
            userIdSection.style.display = "none"; // Hide the user ID section
            userIdInput.disabled = true; // Disable user ID input
            quizStarted = true; // Set quizStarted to true
            currentQuestionIndex = 0; // Reset currentQuestionIndex
            score = 0; // Reset score
            questionElement.style.display = "block"; // Show the question element
            nextButton.innerHTML = "Next";
            showQuestion(); // Call showQuestion after starting the quiz
        }

        function showQuestion() {

            if (!quizStarted) {
                return;
            }

            const currentQuestion = questions[currentQuestionIndex];
            let questionNo = currentQuestionIndex + 1;
            questionElement.innerHTML = questionNo + ". " + currentQuestion.question;

            answerButtons.innerHTML = ""; // Add this line to clear existing buttons

            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);

            });

            answerButtons.style.display = "block"; // Display the answer buttons
        }

        function resetState() {
            questionElement.style.display = "none"; // Hide the question
            answerButtons.style.display = "none"; // Hide the answer buttons
            while (answerButtons.firstChild) {
                answerButtons.removeChild(answerButtons.firstChild)
            }
            nextButton.style.display = "none";
            const scoreContainer = document.getElementById('score-container'); // Define scoreContainer here
            scoreContainer.style.display = "none"; // Hide the score container
        }

        function endQuiz() {
            showScore();
            quizStarted = false;
            userIdInput.disabled = false; // Enable user ID input

        }
        function selectAnswer(e) {
            const selectedButton = e.target;
            const isCorrect = selectedButton.dataset.correct === "true";
            if (isCorrect) {
                selectedButton.classList.add("correct");
                score++;
                console.log(score);

            } else {
                selectedButton.classList.add("incorrect");
            }
            Array.from(answerButtons.children).forEach(button => {
                if (button.dataset.correct === "true") {
                    button.classList.add("correct");
                }
                button.disabled = true;
            });
            if (currentQuestionIndex < questions.length - 1) {
                nextButton.style.display = "block";
            } else {
                endQuiz();
            }
        }


        function handleNextButton() {
            currentQuestionIndex++;

            if (currentQuestionIndex < questions.length) {
                showQuestion();
            } else {
                showScore();
            }
            // resetState();
        }

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


        console.log(score);
        function sendQuizMarksToBackend() {
            const userId = userIdInput.value.trim(); // Retrieve user ID from the input field
            const quizScore = score; // Assuming 'score' variable holds the quiz score

            fetch('/quiz2', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({ userId, quizScore }),
            })
            .then(response => {
                if (!response.ok) {
                    throw new Error('Failed to send quiz marks to the server');
                }
                return response.json();
            })
            .then(data => {
                console.log('Quiz marks sent successfully:', data);
            })
            .catch(error => {
                console.error('Error sending quiz marks to the server:', error);
            });
        }
        function showScore() {
            // resetState();
            questionElement.innerHTML = `You scored ${score} out of ${questions.length}!`;
            nextButton.innerHTML = "Play Again";
            nextButton.style.display = "block";
            sendQuizMarksToBackend();

        }


        // Call the function when the quiz is completed
        console.log(score);

        startQuiz();

    </script>
</body>
</html>