diff --git a/lib/zin/wg/docapp/js/v1.js b/lib/zin/wg/docapp/js/v1.js
index 43bb1713ab..5fd3ba9be7 100644
--- a/lib/zin/wg/docapp/js/v1.js
+++ b/lib/zin/wg/docapp/js/v1.js
@@ -1027,6 +1027,33 @@ const commands =
                 $.post($.createLink('doc', 'edit', `docID=${docID}`), docData);
             }
         });
+
+    /**
+     * 加载懒加载内容。
+     * Load the lazy content.
+     */
+    loadLazyContent: function(_, args)
+    {
+        const selector = args[0];
+        if(!selector) return;
+        $(selector).closest('.lazy-content').trigger('loadContent');
+    },
+
+    /**
+     * 更新懒加载内容。
+     * Update the lazy content.
+     */
+    updateLazyContent: function(context, args)
+    {
+        const event    = context.event;
+        const $element = $(event.currentTarget);
+        const selector = args[0] || $element.data('lazyTarget');
+        const $lazy    = (selector ? $(selector) : $element).closest('.lazy-content');
+        const url      = $element.data('url') || $element.attr('href');
+        if(url) $lazy.trigger('loadContent', url);
+        event.preventDefault();
+        event.stopPropagation();
+    },
 /**
  * 定义页面上的自定义渲染器。
  * Define the custom renderers on the page.