进阶模式逻辑

advancedMode.js

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+document.getElementById("fileInput").addEventListener("change", handleFile, false);
+document.getElementById("randomSelectButton").addEventListener("click", randomSelect);
+document.getElementById("clearScoresButton").addEventListener("click", clearScores);
+
+let students = [];
+
+// 处理文件上传
+function handleFile(e) {
+    const file = e.target.files[0];
+    const reader = new FileReader();
+
+    reader.onload = function (event) {
+        const data = new Uint8Array(event.target.result);
+        const workbook = XLSX.read(data, { type: "array" });
+
+        const firstSheet = workbook.Sheets[workbook.SheetNames[0]];
+        const rows = XLSX.utils.sheet_to_json(firstSheet, { header: 1 });
+
+        // 将学生数据转换为对象数组
+        students = rows.map(row => ({
+            id: row[0],
+            name: row[1],
+            score: 0,  // 初始积分为0
+            consecutiveCorrect: 0,
+            consecutiveIncorrect: 0,
+        }));
+        students.shift(); // 删除第一行的标题
+
+        // 加载已存储的学生积分
+        loadSavedScores();
+
+        // 移除按钮的 hidden 类以显示点名按钮
+        document.getElementById("randomSelectButton").classList.remove("hidden");
+        document.getElementById("clearScoresButton").classList.remove("hidden");
+    };
+
+    reader.readAsArrayBuffer(file);
+}
+
+// 加载本地存储的积分数据
+function loadSavedScores() {
+    const savedData = localStorage.getItem("studentsData");
+    if (savedData) {
+        const savedStudents = JSON.parse(savedData);
+        students.forEach(student => {
+            const savedStudent = savedStudents.find(s => s.id === student.id);
+            if (savedStudent) {
+                student.score = savedStudent.score;
+            }
+        });
+    }
+    updateRanking();
+}
+
+// 保存积分数据到本地存储
+function saveScores() {
+    localStorage.setItem("studentsData", JSON.stringify(students));
+}
+
+// 随机点名并计算积分
+function randomSelect() {
+    if (students.length === 0) return;
+
+    // 计算总积分，按比例降低被点到的概率
+    const totalScore = students.reduce((acc, student) => acc + (1 / (student.score + 1)), 0);
+    let randomValue = Math.random() * totalScore;
+    let selectedStudent = null;
+
+    for (let student of students) {
+        randomValue -= 1 / (student.score + 1);
+        if (randomValue <= 0) {
+            selectedStudent = student;
+            break;
+        }
+    }
+
+    // 点到学生
+    document.getElementById("studentInfo").innerHTML = `
+        <p>点到学生：${selectedStudent.name} (学号: ${selectedStudent.id})</p>
+    `;
+    document.getElementById("studentInfo").classList.remove("hidden");
+
+    // 积分逻辑：每点到一次，积分 +1
+    selectedStudent.score += 1;
+
+    // 模拟回答是否正确
+    const isAnswerCorrect = Math.random() > 0.5; // 随机决定答案是否正确
+    let answerScore = 0;
+
+    // 答题逻辑
+    if (isAnswerCorrect) {
+        answerScore = Math.random() * 2 + 0.5; // 随机增加0.5到2.5分
+        selectedStudent.score += answerScore; // 增加答对的分数
+        selectedStudent.consecutiveCorrect += 1; // 连续正确增加计数
+        selectedStudent.consecutiveIncorrect = 0; // 重置错误计数
+    } else {
+        answerScore = -1; // 答错则扣1分
+        selectedStudent.score += answerScore; // 扣分
+        selectedStudent.consecutiveIncorrect += 1; // 连续错误增加计数
+        selectedStudent.consecutiveCorrect = 0; // 重置正确计数
+    }
+
+    // 连续答对翻倍，连续答错扣分翻倍
+    if (selectedStudent.consecutiveCorrect > 1) {
+        selectedStudent.score += answerScore; // 连续答对，翻倍
+    }
+    if (selectedStudent.consecutiveIncorrect > 1) {
+        selectedStudent.score += answerScore; // 连续答错，翻倍
+    }
+
+    // 显示反馈
+    const answerFeedback = isAnswerCorrect ? `+${answerScore.toFixed(1)} (答对)` : `${answerScore} (答错)`;
+    document.getElementById("feedback").innerHTML = `
+        <p>${selectedStudent.name} 的积分变动：+1 (点到) ${answerFeedback}</p>
+    `;
+    document.getElementById("feedback").classList.remove("hidden");
+
+    // 保存积分到本地存储
+    saveScores();
+
+    updateRanking();
+}
+
+// 更新积分排行榜
+function updateRanking() {
+    students.sort((a, b) => b.score - a.score);
+
+    let rankTableHTML = students.map(student => `
+        <tr>
+            <td>${student.id}</td>
+            <td>${student.name}</td>
+            <td>${student.score.toFixed(1)}</td>
+        </tr>
+    `).join("");
+
+    document.getElementById("rankList").innerHTML = rankTableHTML;
+    document.getElementById("rankTable").classList.remove("hidden");
+}
+
+// 清除积分
+function clearScores() {
+    students.forEach(student => {
+        student.score = 0;
+        student.consecutiveCorrect = 0; // 清除连续正确计数
+        student.consecutiveIncorrect = 0; // 清除连续错误计数
+    });
+    saveScores(); // 保存清空后的数据
+    updateRanking(); // 更新排行榜
+}
+
+// 页面加载时，加载学生数据
+window.onload = function() {
+    loadSavedScores();
+};