parent
15139170e9
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68be13d50d
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let originalData = [];
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let updatedData = [];
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let workbook;
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let sheetName;
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let skippedStudents = [];
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// 导入学生名单
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document.getElementById('excelFileInput').addEventListener('change', function (e) {
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var file = e.target.files[0];
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if (!file) {
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return;
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}
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var reader = new FileReader();
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reader.onload = function (e) {
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var data = new Uint8Array(e.target.result);
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workbook = XLSX.read(data, { type: 'array' });
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sheetName = workbook.SheetNames[0];
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var worksheet = workbook.Sheets[sheetName];
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originalData = XLSX.utils.sheet_to_json(worksheet);
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updatedData = JSON.parse(JSON.stringify(originalData));
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var displayDiv = document.getElementById('excelDataDisplay');
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// 添加表头
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displayDiv.innerHTML = '<div style="display: flex; justify-content: space-between;"><span>学号</span><span>姓名</span><span>积分</span></div>';
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updatedData.forEach(function (row) {
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var rowDiv = document.createElement('div');
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Object.keys(row).forEach(key => {
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var cellDiv = document.createElement('span');
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cellDiv.textContent = row[key] + ' ';
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rowDiv.appendChild(cellDiv);
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});
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displayDiv.appendChild(rowDiv);
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});
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};
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reader.readAsArrayBuffer(file);
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});
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// 点名按钮
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document.getElementById('callButton').addEventListener('click', function () {
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// 去除上一次的高亮
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var displayDiv = document.getElementById('excelDataDisplay');
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Array.from(displayDiv.children).forEach(child => child.style.backgroundColor = '');
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// 过滤掉因上次回答问题得分超过2.5而跳过的学生
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let eligibleStudents = updatedData.filter(student => !skippedStudents.includes(student));
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// 计算总积分
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let totalPoints = eligibleStudents.reduce((acc, student) => {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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return acc + (pointsKey ? parseInt(student[pointsKey]) : 0);
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}, 0);
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// 确保总积分不为零
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if (totalPoints === 0) {
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// 如果总积分为零，可以随机选择一个学生或者采取其他处理方式
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let randomIndex = Math.floor(Math.random() * eligibleStudents.length);
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let selectedStudent = eligibleStudents[randomIndex];
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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var selectedRow = rows.find(row => row.querySelector('span').textContent.trim() === selectedStudent[Object.keys(selectedStudent)[0]]);
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selectedRow.style.backgroundColor = 'lightblue';
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// 获取选中行的学号和姓名并显示在主页面
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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var selectedStudentDiv = document.getElementById('selectedStudentInfo');
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selectedStudentDiv.innerHTML = `<p>点到的学生学号：${studentId}，姓名：${studentName}</p>`;
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return;
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}
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// 计算每个学生被选中的概率（总积分越高，被点到的概率越低）
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let probabilities = eligibleStudents.map(student => {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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let studentPoints = pointsKey ? parseInt(student[pointsKey]) : 0;
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return 1 / (studentPoints + 1) / totalPoints;
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});
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// 使用 Math.random 和 Date.now 作为种子
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let randomValue = Math.random() + Date.now() % 1000 / 1000;
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let cumulativeProbability = 0;
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let selectedStudent;
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for (let i = 0; i < eligibleStudents.length; i++) {
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cumulativeProbability += probabilities[i];
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if (randomValue < cumulativeProbability) {
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selectedStudent = eligibleStudents[i];
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break;
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}
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}
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if (selectedStudent) {
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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var selectedRow = rows.find(row => row.querySelector('span').textContent.trim() === selectedStudent[Object.keys(selectedStudent)[0]]);
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selectedRow.style.backgroundColor = 'lightblue';
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// 获取选中行的学号和姓名并显示在主页面
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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var selectedStudentDiv = document.getElementById('selectedStudentInfo');
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selectedStudentDiv.innerHTML = `<p>点到的学生学号：${studentId}，姓名：${studentName}</p>`;
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}
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});
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// 到达教室按钮
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document.getElementById('arriveClassroom').addEventListener('click', function () {
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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if (rows.length > 0) {
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var selectedRow = rows.find(row => row.style.backgroundColor === 'lightblue');
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if (selectedRow) {
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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// 查找对应的学生并增加积分
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var student = updatedData.find(student => student[Object.keys(student)[0]] === studentId && student[Object.keys(student)[1]] === studentName);
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if (student) {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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if (pointsKey) {
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student[pointsKey] = parseFloat(student[pointsKey]) + 1;
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// 更新显示
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var rowSpans = selectedRow.querySelectorAll('span');
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rowSpans[rowSpans.length - 1].textContent = student[pointsKey];
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}
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}
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}
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}
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});
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// 准确重复所提问的问题
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document.getElementById('repeatedQuestionYes').addEventListener('click', function () {
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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if (rows.length > 0) {
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var selectedRow = rows.find(row => row.style.backgroundColor === 'lightblue');
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if (selectedRow) {
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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// 查找对应的学生并增加积分
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var student = updatedData.find(student => student[Object.keys(student)[0]] === studentId && student[Object.keys(student)[1]] === studentName);
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if (student) {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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if (pointsKey) {
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student[pointsKey] = parseFloat(student[pointsKey]) + 0.5;
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// 更新显示
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var rowSpans = selectedRow.querySelectorAll('span');
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rowSpans[rowSpans.length - 1].textContent = student[pointsKey];
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}
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}
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}
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}
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});
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// 不能准确重复所提问的问题
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document.getElementById('repeatedQuestionNo').addEventListener('click', function () {
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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if (rows.length > 0) {
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var selectedRow = rows.find(row => row.style.backgroundColor === 'lightblue');
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if (selectedRow) {
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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// 查找对应的学生并减少积分
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var student = updatedData.find(student => student[Object.keys(student)[0]] === studentId && student[Object.keys(student)[1]] === studentName);
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if (student) {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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if (pointsKey) {
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student[pointsKey] = parseFloat(student[pointsKey]) - 1;
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// 更新显示
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var rowSpans = selectedRow.querySelectorAll('span');
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rowSpans[rowSpans.length - 1].textContent = student[pointsKey];
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}
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}
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}
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}
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});
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// 增加自定义分数
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document.getElementById('addScoreButton').addEventListener('click', function () {
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var inputScore = parseFloat(document.getElementById('addScoreInput').value);
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if (inputScore >= 0.5 && inputScore <= 3 && !isNaN(inputScore)) {
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var displayDiv = document.getElementById('excelDataDisplay');
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var rows = Array.from(displayDiv.children).slice(1);
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if (rows.length > 0) {
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var selectedRow = rows.find(row => row.style.backgroundColor === 'lightblue');
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if (selectedRow) {
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var studentInfo = selectedRow.querySelectorAll('span');
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var studentId = studentInfo[0].textContent.trim();
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var studentName = studentInfo[1].textContent.trim();
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// 查找对应的学生并增加积分
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var student = updatedData.find(student => student[Object.keys(student)[0]] === studentId && student[Object.keys(student)[1]] === studentName);
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if (student) {
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let pointsKey = Object.keys(student).find(key => key.includes('积分'));
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if (pointsKey) {
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student[pointsKey] = parseFloat(student[pointsKey]) + inputScore;
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// 更新显示
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var rowSpans = selectedRow.querySelectorAll('span');
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rowSpans[rowSpans.length - 1].textContent = student[pointsKey];
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// 如果得分超过 2.5 分，将该学生加入跳过列表
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if (student[pointsKey] > 2.5) {
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skippedStudents.push(student);
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}
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}
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}
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}
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}
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} else {
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alert('输入的分数应在 0.5 到 3 之间且为有效数字。');
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}
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});
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