diff --git a/asset/docsify-apachecn-footer.js b/asset/docsify-apachecn-footer.js
new file mode 100644
index 0000000..b466929
--- /dev/null
+++ b/asset/docsify-apachecn-footer.js
@@ -0,0 +1,31 @@
+(function(){
+    var footer = [
+        '<hr/>', 
+        '<div align="center">', 
+        '  <p><a href="http://www.apachecn.org/" target="_blank"><font face="KaiTi" size="6" color="red">我们一直在努力</font></a><p>', 
+        '  <p><a href="https://github.com/apachecn/eloquent-js-3e-zh/" target="_blank">apachecn/eloquent-js-3e-zh</a></p>', 
+        '  <p><iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=watch&count=true&v=2" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>', 
+        '  <iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=star&count=true" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>', 
+        '  <iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=fork&count=true" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>', 
+        '  <a target="_blank" href="//shang.qq.com/wpa/qunwpa?idkey=bcee938030cc9e1552deb3bd9617bbbf62d3ec1647e4b60d9cd6b6e8f78ddc03"><img border="0" src="//pub.idqqimg.com/wpa/images/group.png" alt="ML | ApacheCN" title="ML | ApacheCN"></a></p>', 
+        '  <p><span id="cnzz_stat_icon_1275211409"></span></p>', 
+        '  <div style="text-align:center;margin:0 0 10.5px;">', 
+        '    <ins class="adsbygoogle"', 
+        '         style="display:inline-block;width:728px;height:90px"', 
+        '         data-ad-client="ca-pub-3565452474788507"', 
+        '         data-ad-slot="2543897000"></ins>', 
+        '  </div>', 
+        '</div>'
+    ].join('\n')
+    var plugin = function(hook) {
+      hook.afterEach(function(html) {
+        return html + footer
+      })
+      hook.doneEach(function() {
+        (adsbygoogle = window.adsbygoogle || []).push({})
+      })
+    }
+    var plugins = window.$docsify.plugins || []
+    plugins.push(plugin)
+    window.$docsify.plugins = plugins
+})()
\ No newline at end of file
diff --git a/index.html b/index.html
index 42ef20b..93f354f 100644
--- a/index.html
+++ b/index.html
@@ -18,35 +18,7 @@
 </head>
 <body>
   <div id="app">now loading...</div>
-  <script id="footer" type="text/xml">
-    <hr/>
-    <div align="center">
-      <p><a href="http://www.apachecn.org/" target="_blank"><font face="KaiTi" size="6" color="red">我们一直在努力</font></a><p>
-      <p><a href="https://github.com/apachecn/eloquent-js-3e-zh/" target="_blank">apachecn/eloquent-js-3e-zh</a></p>
-      <p><iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=watch&count=true&v=2" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>
-      <iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=star&count=true" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>
-      <iframe align="middle" src="https://ghbtns.com/github-btn.html?user=apachecn&repo=eloquent-js-3e-zh&type=fork&count=true" frameborder="0" scrolling="0" width="100px" height="25px"></iframe>
-      <a target="_blank" href="//shang.qq.com/wpa/qunwpa?idkey=bcee938030cc9e1552deb3bd9617bbbf62d3ec1647e4b60d9cd6b6e8f78ddc03"><img border="0" src="//pub.idqqimg.com/wpa/images/group.png" alt="ML | ApacheCN" title="ML | ApacheCN"></a></p>
-      <p><span id='cnzz_stat_icon_1275211409'></span></p>
-      <div style="text-align:center;margin:0 0 10.5px;">
-        <ins class="adsbygoogle"
-             style="display:inline-block;width:728px;height:90px"
-             data-ad-client="ca-pub-3565452474788507"
-             data-ad-slot="2543897000"></ins>
-      </div>
-    </div>
-  </script>
   <script>
-    window.docsPlugin = function(hook) {
-      var footer = document.querySelector('#footer').innerHTML
-      hook.afterEach(function(html) {
-        return html + footer
-      })
-      hook.doneEach(function() {
-        (adsbygoogle = window.adsbygoogle || []).push({})
-      })
-    }
-    
     window.$docsify = {
       loadSidebar: 'SUMMARY.md',
       name: 'JavaScript 编程精解中文第三版',
@@ -77,5 +49,6 @@
   <script src="asset/docsify-baidu-push.js"></script>
   <script src="asset/docsify-baidu-stat.js"></script>
   <script src="asset/docsify-cnzz.js"></script>
+  <script src="asset/docsify-apachecn-footer.js"></script>
 </body>
 </html>
