<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>积分显示</title> <style> body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: linear-gradient(135deg, #a18cd1, #fbc2eb); height: 100vh; margin: 0; display: flex; justify-content: center; align-items: center; color: #333; } .container { width: 90%; max-width: 800px; background: rgba(255, 255, 255, 0.85); padding: 40px; border-radius: 20px; box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37); backdrop-filter: blur(8.5px); -webkit-backdrop-filter: blur(8.5px); border: 1px solid rgba(255, 255, 255, 0.18); text-align: center; } h1 { margin-bottom: 30px; font-size: 2em; color: #ff5722; } #sortButton { padding: 10px 20px; font-size: 1em; border: none; border-radius: 25px; background-color: #2196F3; color: white; cursor: pointer; transition: background-color 0.3s, transform 0.2s; margin-bottom: 20px; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); } #sortButton:hover { background-color: #1e88e5; transform: scale(1.05); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); } table { width: 100%; border-collapse: collapse; margin-top: 10px; } th, td { padding: 12px 15px; border-bottom: 1px solid #ddd; font-size: 1em; } th { background-color: #4CAF50; color: white; } tr:hover { background-color: #f1f1f1; } .button-group { margin-top: 30px; display: flex; justify-content: space-between; gap: 10px; } .back-button, .clear-button { padding: 10px 20px; font-size: 1em; border: none; border-radius: 25px; color: white; cursor: pointer; transition: background-color 0.3s, transform 0.2s; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); } .back-button { background-color: #2196F3; } .back-button:hover { background-color: #1e88e5; transform: scale(1.05); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); } .clear-button { background-color: #f44336; } .clear-button:hover { background-color: #e53935; transform: scale(1.05); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); } @media (max-width: 600px) { th, td { padding: 8px 10px; } #sortButton, .button-group button { width: 100%; margin: 10px 0; } } </style> </head> <body> <div class="container"> <h1>积分显示</h1> <button id="sortButton">切换排序 (降序)</button> <table> <thead> <tr> <th>姓名</th> <th>学号</th> <th>积分</th> </tr> </thead> <tbody id="studentList"> <!-- 学生积分将在此处显示 --> </tbody> </table> <div class="button-group"> <button class="back-button" onclick="window.location.href='index.html'">返回主页面</button> <button class="clear-button" id="clearButton">清除所有数据</button> </div> </div> <script> const studentList = document.getElementById('studentList'); const sortButton = document.getElementById('sortButton'); const clearButton = document.getElementById('clearButton'); let ascend = false; // 默认降序 //删除表 async function deleteTable(tableName) { try { const response = await fetch('/api/delete-table', { method: 'POST', headers: { 'Content-Type': 'application/json', }, body: JSON.stringify({ tableName }), }); if (!response.ok) { throw new Error('删除表失败'); } const data = await response.json(); alert(data.message); // 成功后显示消息 } catch (error) { console.error('删除表操作失败:', error); alert('删除表失败'); } } // 获取按分数降序排列的学生排名 async function fetchDescendRanking() { try { const response = await fetch('/api/descend_ranking'); if (!response.ok) { alert('无法获取降序排名'); return null; } const ranking = await response.json(); // 获取并解析为JSON数组 return ranking; // 返回排名数组 } catch (error) { console.error('请求失败:', error); return null; } } // 获取按分数升序排列的学生排名 async function fetchAscendRanking() { try { const response = await fetch('/api/ascend_ranking'); if (!response.ok) { alert('无法获取升序排名'); return null; } const ranking = await response.json(); // 获取并解析为JSON数组 return ranking; // 返回排名数组 } catch (error) { console.error('请求失败:', error); return null; } } async function displayStudents() { let ranking; // 声明 ranking 变量 if (ascend) { ranking = await fetchAscendRanking(); // 获取升序排名 } else { ranking = await fetchDescendRanking(); // 获取降序排名 } // 检查 ranking 是否为空 if (!ranking) { alert('空 ranking'); return; // 退出函数 } studentList.innerHTML = ''; // 清空表格内容 // 只显示前五名学生 ranking.slice(0, 5).forEach(student => { studentList.innerHTML += ` <tr> <td>${student.student_name}</td> <!-- 学生姓名 --> <td>${student.student_id}</td> <!-- 学生ID --> <td>${student.score}</td> <!-- 学生分数 --> </tr> `; }); } sortButton.addEventListener('click', () => { ascend = !ascend; sortButton.textContent = `切换排序 (${ascend ? '升序' : '降序'})`; displayStudents(); }); clearButton.addEventListener('click', () => { const confirmation = confirm("确定要清除所有学生数据吗?此操作无法撤销!"); if (confirmation) { deleteTable('students'); alert("所有信息已清除!"); displayStudents(); // 重新显示清空后的数据 } }); displayStudents(); </script> </body> </html>