fixed 返回顶部功能

themes/Ying/layouts/_default/ly.html

@@ -1,5 +1,7 @@
 {{ define "main" }}
 <div id="pjax-container" uk-scrollspy="target: > #szh,hr,h2,p; cls: uk-animation-slide-bottom-small; delay: 0">
+  <!-- 用于 Pjax 获取当前文章 ID -->
+  <div id="data-pid" style="display:none;">/{{ .Params.pid | default .Title }}.html</div>
   <div class="post-content" itemprop="articleBody" uk-scrollspy="target: > #szh; cls: uk-animation-slide-bottom-small; delay: 0">
     {{ .Content }}
     <div id="szh">