跨域bug修复1

frontend/admin/conduct.php

@@ -56,7 +56,7 @@ include __DIR__ . '/../includes/header.php';
 </div>
 
 <script>
-let selectedStudentIds = [];
+var selectedStudentIds = [];
 
 async function loadStudents() {
     const res = await apiGet('/api/admin/students');

frontend/admin/homework.php

@@ -91,7 +91,7 @@ include __DIR__ . '/../includes/header.php';
 </div>
 
 <script>
-let selectedStudentIds = [];
+var selectedStudentIds = [];
 
 // 初始化扣分配置
 const hwMaxPoints = window.HOMEWORK_MAX_POINTS || 3;

frontend/assets/js/admin.js

@@ -9,11 +9,11 @@
  * 版权所有 © Sea Network Technology Studio
  */
 
-// 全局变量
-let selectedStudentIds = [];
-let currentPage = 1;
-let totalPages = 1;
-let currentHistoryPage = 1;
+// 全局变量（使用 var 避免与页面级 let 重复声明冲突）
+var selectedStudentIds = [];
+var currentPage = 1;
+var totalPages = 1;
+var currentHistoryPage = 1;
 
 // 显示批量加减分模态框
 function showBatchPointsModal() {