✨ disqus/disqusjs/facebook comments 可隨夜間模式按鈕切換而轉換主題

🐛 修復pjax下valine評論顯示不正常的bugs
🐛 修復facebook comments 在手機下寬度不是100%的bugs

layout/includes/comments/gitalk.pug

@@ -1,12 +1,12 @@
 script.
-  function loadGitalk () {
-    function addGitalkSource () {
-      const ele = document.createElement('link')
-      ele.rel = 'stylesheet'
-      ele.href= '!{url_for(theme.CDN.gitalk_css)}'
-      document.getElementsByTagName('head')[0].appendChild(ele)
-    }
+  function addGitalkSource () {
+    const ele = document.createElement('link')
+    ele.rel = 'stylesheet'
+    ele.href= '!{url_for(theme.CDN.gitalk_css)}'
+    document.getElementsByTagName('head')[0].appendChild(ele)
+  }
 
+  function loadGitalk () {
     function initGitalk () {
       var gitalk = new Gitalk({
         clientID: '!{theme.gitalk.client_id}',
@@ -30,13 +30,11 @@ script.
       addGitalkSource()
       $.getScript('!{url_for(theme.CDN.gitalk)}', initGitalk)
     }
-
-    function commentCount(n){
-      try {
-        document.getElementsByClassName('gitalk-comment-count')[0].innerHTML= n
-      } catch (e) {
-        return false
-      }
+  }
+  
+  function commentCount(n){
+    if (document.querySelector('#post-meta .gitalk-comment-count')) {
+      document.querySelector('#post-meta .gitalk-comment-count').innerHTML= n
     }
   }