merge(#30): from kidonng/master into sukkaw.master

feat: use `DISQUS.reset` when reloading

src/disqus.js

@@ -133,6 +133,16 @@
          * loadDisqus() - 加载 Disqus
          */
         function loadDisqus() {
+            if (window.DISQUS) {
+                window.DISQUS.reset({
+                    reload: true,
+                    config: function() {
+                        this.page.identifier = disqusjs.config.identifier;
+                        this.page.url = disqusjs.config.url;
+                        this.page.title = disqusjs.config.title;
+                    }
+                });
+            } else {
                 let s = d.createElement('script');
 
                 // 显示提示信息
@@ -144,6 +154,7 @@
                 s.setAttribute('data-timestamp', +new Date());
                 (d.head || d.body).appendChild(s);
             }
+        }
 
         function checkDisqus() {
             $$('disqus_thread').innerHTML = `<div id="dsqjs"><section><div id="dsqjs-msg">正在检查 Disqus 能否访问...</div></section><footer><p class="dsqjs-footer">Powered by <a class="dsqjs-disqus-logo" href="https://disqus.com" rel="nofollow noopener noreferrer" target="_blank"></a>&nbsp;&amp;&nbsp;<a href="https://github.com/SukkaW/DisqusJS" target="_blank">DisqusJS</a></p></footer></div>`;