diff --git a/index.html b/index.html
index 0f88f50..6430cbb 100644
--- a/index.html
+++ b/index.html
@@ -29,6 +29,7 @@
   <div class="progress-indicator-2"></div>
 
   <script src="config.js"></script>
+  <script type="text/javascript" charset="UTF-8" src="https://cdn.wwads.cn/js/makemoney.js" async></script>
   <noscript>
     <p>《ECMAScript 6 入门教程》是一本开源的JavaScript语言教程，全面介绍ECMAScript 6新增的语法特性。</p>
     <p>本书力争覆盖ES6与ES5的所有不同之处，对涉及的语法知识给予详细介绍，并给出大量简洁易懂的示例代码。</p>
diff --git a/js/ditto.js b/js/ditto.js
index 6da3846..e971e1b 100644
--- a/js/ditto.js
+++ b/js/ditto.js
@@ -243,15 +243,7 @@ function li_create_linkage(li_tag, header_level) {
 }
 
 function create_banner(element) {
-  (function() {
-    var wwads = document.createElement('script');
-    wwads.type = 'text/javascript';
-    wwads.async = true;
-    wwads.src = 'https://cdn.wwads.cn/js/makemoney.js';
-    (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(wwads);
-  })();
-
-  var banner = $('<div class="wwads-cn wwads-horizontal" data-id="197" style="max-width:100%"></div>')
+  var banner = $('<div class="wwads-cn wwads-horizontal" data-id="197" style="max-width:100%;"></div>')
     .insertAfter(element);
 /*
   // 2022年8月25日