diff --git a/student.js b/student.js
index ecf8f2d..c717807 100644
--- a/student.js
+++ b/student.js
@@ -1,98 +1,98 @@
-// 返回上一页  
-function goBack() {  
-    window.history.back();  
-}  
-
-function showMessage(text) {  
-    const messageDiv = document.getElementById("message");  
-    messageDiv.textContent = text;  
-    messageDiv.style.display = "block"; // 显示消息  
-
-    setTimeout(() => {  
-        messageDiv.style.display = "none"; // 1秒后隐藏消息  
-    }, 1000);  
-}
-
-// 加载学生名单  
-function loadStudentList() {  
-    // 注册工具提示事件  
-    registerTooltipEvents(); 
-    const students = JSON.parse(localStorage.getItem('students')) || [];  
-    const list = document.getElementById('studentList');  
-    list.innerHTML = '';  
-
-    if (students.length === 0) {  
-        list.innerHTML = '<div>尚未导入任何学生名单。</div>';  
-        return;  
-    }  
-
-    // 积分从大到小排序学生  
-    students.sort((a, b) => b.points - a.points);  
-
-    students.forEach((student, index) => {  
-        list.innerHTML += `  
-            <div>  
-                ${student.id} - ${student.name} - 积分: ${student.points}  
-                <button   
-                    data-tooltip="清除积分"  
-                    onclick="clearStudentPoints(${index})"  
-                    style="background: none; border: none; padding: 0; cursor: pointer;">  
-                    <img src="clear-icon.svg" alt="清除" style="width: 40px; height: 40px;" />   
-                </button>  
-                <button   
-                    data-tooltip="删除学生"  
-                    onclick="deleteStudent(${index})"  
-                    style="background: none; border: none; padding: 0; cursor: pointer;">  
-                    <img src="delete-icon.svg" alt="删除" style="width: 40px; height: 40px;" />   
-                </button>  
-            </div>`;  
-    });    
-    registerTooltipEvents();
-}  
-
-function registerTooltipEvents() {  
-    const buttons = document.querySelectorAll('button[data-tooltip]');  
-    const tooltip = document.getElementById('tooltip');  
-
-    buttons.forEach(button => {  
-        button.addEventListener('mouseenter', function(event) {  
-            tooltip.textContent = button.getAttribute('data-tooltip');  
-            tooltip.style.display = 'block';  
-            tooltip.style.left = event.pageX + 'px';  
-            tooltip.style.top = (event.pageY + 20) + 'px'; // 鼠标下方略微偏移  
-        });  
-
-        button.addEventListener('mouseleave', function() {  
-            tooltip.style.display = 'none';  
-        });  
-    });  
-}  
-
-// 清除单个学生积分  
-function clearStudentPoints(index) {  
-    const students = JSON.parse(localStorage.getItem('students')) || [];  
-    students[index].points = 0; // 清除该学生的积分  
-    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
-    loadStudentList(); // 重新加载学生列表  
-    showMessage("已清除该学生积分。");  
-}  
-
-// 删除单个学生  
-function deleteStudent(index) {  
-    let students = JSON.parse(localStorage.getItem('students')) || [];  
-    students.splice(index, 1); // 删除该学生  
-    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
-    loadStudentList(); // 重新加载学生列表  
-    showMessage("已删除该学生。");  
-}                                                                               
-
-// 一键清除所有学生的积分  
-function resetAllPoints() {  
-    let students = JSON.parse(localStorage.getItem('students')) || [];  
-    students.forEach(student => student.points = 0); // 清除所有学生的积分  
-    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
-    loadStudentList(); // 重新加载学生列表  
-    showMessage("所有学生的积分已清除。");  
-}  
-
+// 返回上一页  
+function goBack() {  
+    window.history.back();  
+}  
+
+function showMessage(text) {  
+    const messageDiv = document.getElementById("message");  
+    messageDiv.textContent = text;  
+    messageDiv.style.display = "block"; // 显示消息  
+
+    setTimeout(() => {  
+        messageDiv.style.display = "none"; // 1秒后隐藏消息  
+    }, 1000);  
+}
+
+// 加载学生名单  
+function loadStudentList() {  
+    // 注册工具提示事件  
+    registerTooltipEvents(); 
+    const students = JSON.parse(localStorage.getItem('students')) || [];  
+    const list = document.getElementById('studentList');  
+    list.innerHTML = '';  
+
+    if (students.length === 0) {  
+        list.innerHTML = '<div>尚未导入任何学生名单。</div>';  
+        return;  
+    }  
+
+    // 积分从大到小排序学生  
+    students.sort((a, b) => b.points - a.points);  
+
+    students.forEach((student, index) => {  
+        list.innerHTML += `  
+            <div>  
+                ${student.id} - ${student.name} - 积分: ${student.points}  
+                <button   
+                    data-tooltip="清除积分"  
+                    onclick="clearStudentPoints(${index})"  
+                    style="background: none; border: none; padding: 0; cursor: pointer;">  
+                    <img src="clear-icon.svg" alt="清除" style="width: 40px; height: 40px;" />   
+                </button>  
+                <button   
+                    data-tooltip="删除学生"  
+                    onclick="deleteStudent(${index})"  
+                    style="background: none; border: none; padding: 0; cursor: pointer;">  
+                    <img src="delete-icon.svg" alt="删除" style="width: 40px; height: 40px;" />   
+                </button>  
+            </div>`;  
+    });    
+    registerTooltipEvents();
+}  
+
+function registerTooltipEvents() {  
+    const buttons = document.querySelectorAll('button[data-tooltip]');  
+    const tooltip = document.getElementById('tooltip');  
+
+    buttons.forEach(button => {  
+        button.addEventListener('mouseenter', function(event) {  
+            tooltip.textContent = button.getAttribute('data-tooltip');  
+            tooltip.style.display = 'block';  
+            tooltip.style.left = event.pageX + 'px';  
+            tooltip.style.top = (event.pageY + 20) + 'px'; // 鼠标下方略微偏移  
+        });  
+
+        button.addEventListener('mouseleave', function() {  
+            tooltip.style.display = 'none';  
+        });  
+    });  
+}  
+
+// 清除单个学生积分  
+function clearStudentPoints(index) {  
+    const students = JSON.parse(localStorage.getItem('students')) || [];  
+    students[index].points = 0; // 清除该学生的积分  
+    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
+    loadStudentList(); // 重新加载学生列表  
+    showMessage("已清除该学生积分。");  
+}  
+
+// 删除单个学生  
+function deleteStudent(index) {  
+    let students = JSON.parse(localStorage.getItem('students')) || [];  
+    students.splice(index, 1); // 删除该学生  
+    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
+    loadStudentList(); // 重新加载学生列表  
+    showMessage("已删除该学生。");  
+}                                                                               
+
+// 一键清除所有学生的积分  
+function resetAllPoints() {  
+    let students = JSON.parse(localStorage.getItem('students')) || [];  
+    students.forEach(student => student.points = 0); // 清除所有学生的积分  
+    localStorage.setItem('students', JSON.stringify(students)); // 更新本地存储  
+    loadStudentList(); // 重新加载学生列表  
+    showMessage("所有学生的积分已清除。");  
+}  
+
 window.onload = loadStudentList; // 页面加载时调用  
\ No newline at end of file