improve category page

Author: congnd91

_posts/julia/2021-08-04-index.html

@@ -23,3 +23,20 @@ <h1>Plotly Julia Library</h1>
 
 {% assign languagelist = site.posts | where:"language","julia" | sort: "order"
 %} {% include posts/mainlang_documentation_eg.html %}
+
+<div style="display: none">
+  <h1>all post</h1>
+
+  {% for post in site.posts %}
+  <article>
+    <h2>
+      <a href="{{ post.url }}">
+        {{ post.title }}
+      </a>
+    </h2>
+    <time datetime="{{ post.date | date: "%Y-%m-%d" }}">{{ post.date | date_to_long_string }}</time>
+    {{ post.content }}
+  </article>
+  {% endfor %}
+
+</div>