fix: classes.html JavaScript syntax error - remove template literals in onclick attributes

- Replace template literals with string concatenation to avoid HTML attribute parsing issues
- Add escape function for proper HTML attribute values

app/templates/classes.html

@@ -236,8 +236,6 @@ function toggleMineFilter() {
 
 // 加载班级列表
 function loadClasses() {
-    saveClassFilterState();
-
     const activeFilter = document.getElementById('activeFilter').value;
     const mineFilter = document.getElementById('mineFilterBtn').classList.contains('active');
     let url = '/api/classes?';
@@ -248,69 +246,27 @@ function loadClasses() {
     fetch(url).then(r => r.json()).then(classes => {
         const tbody = document.querySelector('#classesTable tbody');
         const isAdmin = currentUserRole === 'admin';
-        tbody.innerHTML = classes.map(c => `
-            <tr>
-                <td>${c.id}</td>
-                <td>${c.name}</td>
-                <td>${c.level || '启蒙'}</td>
-                <td>${c.description || '-'}</td>
-                <td>${c.active ? '<span class="badge bg-success">进行中</span>' : '<span class="badge bg-secondary">已结束</span>'}</td>
-                <td><a href="#" onclick="viewClassStudents(${c.id})"> ${c.student_count}</a></td>
-                <td>${c.created_at}</td>
-                <td>
-                    <button type="button" class="btn btn-sm btn-success me-1" onclick="openAssignGoalModal(${c.id}, '${c.name}')">分配目标</button>
-                    ${isAdmin ? `<button type="button" class="btn btn-sm btn-primary me-1" onclick="editClass(${c.id}, '${c.name}', ${c.teacher_id || 'null'}, '${c.description || ''}', ${c.active}, '${c.level || '启蒙'}')">编辑</button>
-                    <button type="button" class="btn btn-sm btn-danger" onclick="deleteClass(${c.id})">删除</button>` : ''}
-                </td>
-            </tr>
-        `).join('');
-    });
-}
-    loadClasses();
-};
-
-// 我的班级筛选
-function toggleMineFilter() {
-    const btn = document.getElementById('mineFilterBtn');
-    btn.classList.toggle('active');
-    if (btn.classList.contains('active')) {
-        btn.classList.remove('btn-outline-secondary');
-        btn.classList.add('btn-primary');
-    } else {
-        btn.classList.remove('btn-primary');
-        btn.classList.add('btn-outline-secondary');
-    }
-    loadClasses();
-}
-
-// 加载班级列表
-function loadClasses() {
-    const activeFilter = document.getElementById('activeFilter').value;
-    const mineFilter = document.getElementById('mineFilterBtn').classList.contains('active');
-    let url = '/api/classes?';
-    if (activeFilter) url += 'active=' + activeFilter + '&';
-    if (mineFilter) url += 'mine=true&';
-    url = url.endsWith('&') ? url.slice(0, -1) : url;
-    url = url.endsWith('?') ? '/api/classes' : url;
-    fetch(url).then(r => r.json()).then(classes => {
-        const tbody = document.querySelector('#classesTable tbody');
-        const isAdmin = currentUserRole === 'admin';
-        tbody.innerHTML = classes.map(c => `
-            <tr>
-                <td>${c.id}</td>
-                <td>${c.name}</td>
-                <td>${c.level || '启蒙'}</td>
-                <td>${c.description || '-'}</td>
-                <td>${c.active ? '<span class="badge bg-success">进行中</span>' : '<span class="badge bg-secondary">已结束</span>'}</td>
-                <td><a href="#" onclick="viewClassStudents(${c.id})">${c.student_count}</a></td>
-                <td>${c.created_at}</td>
-                <td>
-                    <button type="button" class="btn btn-sm btn-success me-1" onclick="openAssignGoalModal(${c.id}, '${c.name}')">分配目标</button>
-                    ${isAdmin ? `<button type="button" class="btn btn-sm btn-primary me-1" onclick="editClass(${c.id}, '${c.name}', ${c.teacher_id || 'null'}, '${c.description || ''}', ${c.active}, '${c.level || '启蒙'}')">编辑</button>
-                    <button type="button" class="btn btn-sm btn-danger" onclick="deleteClass(${c.id})">删除</button>` : ''}
-                </td>
-            </tr>
-        `).join('');
+        tbody.innerHTML = classes.map(c => {
+            const esc = (s) => s == null ? '' : String(s).replace(/'/g, "\\'").replace(/"/g, '&quot;');
+            const level = c.level || '启蒙';
+            const desc = c.description || '';
+            const teacherId = c.teacher_id || 'null';
+            const active = c.active ? 'true' : 'false';
+            return '<tr>' +
+                '<td>' + c.id + '</td>' +
+                '<td>' + esc(c.name) + '</td>' +
+                '<td>' + level + '</td>' +
+                '<td>' + esc(desc) + '</td>' +
+                '<td>' + (c.active ? '<span class="badge bg-success">进行中</span>' : '<span class="badge bg-secondary">已结束</span>') + '</td>' +
+                '<td><a href="#" onclick="viewClassStudents(' + c.id + ')">' + c.student_count + '</a></td>' +
+                '<td>' + c.created_at + '</td>' +
+                '<td>' +
+                    '<button type="button" class="btn btn-sm btn-success me-1" onclick="openAssignGoalModal(' + c.id + ', \'' + esc(c.name) + '\')">分配目标</button>' +
+                    (isAdmin ? '<button type="button" class="btn btn-sm btn-primary me-1" onclick="editClass(' + c.id + ', \'' + esc(c.name) + '\', ' + teacherId + ', \'' + esc(desc) + '\', ' + active + ', \'' + level + '\')">编辑</button>' : '') +
+                    '<button type="button" class="btn btn-sm btn-danger" onclick="deleteClass(' + c.id + ')">删除</button>' +
+                '</td>' +
+            '</tr>';
+        }).join('');
     });
 }
 
@@ -518,7 +474,8 @@ document.getElementById('confirm-assign-goal').addEventListener('click', async (
     // 弹出确认框
     if (!confirm('将给班级所有学员分配此目标，确定吗？')) return;
 
-    const res = await fetch(`/api/classes/${currentClassId}/goals`, {
+    const url = '/api/classes/' + currentClassId + '/goals';
+    const res = await fetch(url, {
         method: 'POST',
         headers: {'Content-Type': 'application/json'},
         body: JSON.stringify({
@@ -533,7 +490,11 @@ document.getElementById('confirm-assign-goal').addEventListener('click', async (
     if (res.ok) {
         const data = await res.json();
         assignGoalModal.hide();
-        alert(data.message + (data.skipped_count ? `（${data.skipped_count}个学员已分配此目标，跳过）` : ''));
+        let msg = data.message;
+        if (data.skipped_count) {
+            msg += ' (' + data.skipped_count + '个学员已分配此目标跳过)';
+        }
+        alert(msg);
     } else {
         const err = await res.json();
         alert(err.error || '分配失败');