fix: Markdown开关改用data属性存储内容，修复切换失效问题

xian_favor/api.py

@@ -3360,13 +3360,14 @@ async function showDetail(id, todoPage = 1, todoFilter = 'all') {
                 <strong>内容:</strong>
                 <div class="form-check form-switch">
                     <input class="form-check-input" type="checkbox" id="markdownToggle-${item.id}-content" 
-                           onchange="toggleMarkdownDisplay(${item.id}, 'content', '${escapeHtmlAttr(item.content)}')"
-                           ${localStorage.getItem('markdownDisplay') === 'true' ? 'checked' : ''}>
+                           onchange="toggleMarkdownDisplay(${item.id}, 'content')"
+                           ${localStorage.getItem('markdownDisplay') !== 'false' ? 'checked' : ''}>
                     <label class="form-check-label small" for="markdownToggle-${item.id}-content">Markdown</label>
                 </div>
             </div>
             <div class="border rounded p-3 bg-light quick-insert-area" 
                  id="contentDisplay-${item.id}"
+                 data-raw-content="${escapeHtmlAttr(item.content)}"
                  data-field="content" 
                  data-item-id="${item.id}"
                  ondblclick="showQuickInsert(${item.id}, 'content')"
@@ -3492,13 +3493,14 @@ async function showDetail(id, todoPage = 1, todoFilter = 'all') {
                 <strong>详情/备注:</strong>
                 <div class="form-check form-switch">
                     <input class="form-check-input" type="checkbox" id="markdownToggle-${item.id}-note" 
-                           onchange="toggleMarkdownDisplay(${item.id}, 'note', '${escapeHtmlAttr(item.note)}')"
-                           ${localStorage.getItem('markdownDisplay') === 'true' ? 'checked' : ''}>
+                           onchange="toggleMarkdownDisplay(${item.id}, 'note')"
+                           ${localStorage.getItem('markdownDisplay') !== 'false' ? 'checked' : ''}>
                     <label class="form-check-label small" for="markdownToggle-${item.id}-note">Markdown</label>
                 </div>
             </div>
             <div class="border rounded p-3 bg-light quick-insert-area" 
                  id="noteDisplay-${item.id}"
+                 data-raw-content="${escapeHtmlAttr(item.note)}"
                  data-field="note" 
                  data-item-id="${item.id}"
                  ondblclick="showQuickInsert(${item.id}, 'note')"
@@ -4040,16 +4042,31 @@ function escapeHtml(str) {
     return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
 }
 
-// 转义HTML属性值（用于传递到 onclick 等属性）
+// 转义HTML属性值（用于传递到 data 属性）
 function escapeHtmlAttr(str) {
     if (!str) return '';
-    // 先转义HTML，然后转义单引号和反斜杠
-    return escapeHtml(str).replace(/'/g, '\\&#39;').replace(/"/g, '&quot;').replace(/\\n/g, '\\n');
+    // 转义双引号和特殊字符，用于 HTML 属性值
+    return str.replace(/&/g, '&amp;')
+              .replace(/"/g, '&quot;')
+              .replace(/</g, '&lt;')
+              .replace(/>/g, '&gt;');
+}
+
+// 从 data 属性解码内容
+function decodeHtmlAttr(str) {
+    if (!str) return '';
+    return str.replace(/&quot;/g, '"')
+              .replace(/&lt;/g, '<')
+              .replace(/&gt;/g, '>')
+              .replace(/&amp;/g, '&');
 }
 
 // 切换Markdown显示模式
-function toggleMarkdownDisplay(itemId, field, rawContent) {
+function toggleMarkdownDisplay(itemId, field) {
     const displayEl = document.getElementById(`${field}Display-${itemId}`);
+    if (!displayEl) return;
+    
+    const rawContent = decodeHtmlAttr(displayEl.dataset.rawContent || '');
     const isMarkdown = localStorage.getItem('markdownDisplay') !== 'false';
     
     // 切换状态
@@ -4058,10 +4075,10 @@ function toggleMarkdownDisplay(itemId, field, rawContent) {
     // 更新显示
     if (isMarkdown) {
         // 当前是Markdown，切换到原始文本
-        displayEl.innerHTML = `<pre style="white-space: pre-wrap; word-break: break-all;">${escapeHtml(rawContent.replace(/\\n/g, '\\n').replace(/'/g, "'"))}</pre>`;
+        displayEl.innerHTML = `<pre style="white-space: pre-wrap; word-break: break-all;">${escapeHtml(rawContent)}</pre>`;
     } else {
         // 当前是原始文本，切换到Markdown
-        displayEl.innerHTML = renderMarkdown(rawContent.replace(/\\n/g, '\\n').replace(/'/g, "'"));
+        displayEl.innerHTML = renderMarkdown(rawContent);
     }
     
     // 同步更新其他开关状态