✨ set new! for fresh posts

_includes/head.html

@@ -3,6 +3,7 @@
   <meta http-equiv="X-UA-Compatible" content="IE=edge" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <meta name="google-site-verification" content="fgTBOMeN_sdI4JNBqYTzDwH0458H8AAVbF78jLjwudg" />
+  <script type="text/javascript" src="{{ '/assets/vendor/moment.min.js' | relative_url }}"></script>
 
   <title>
     {% if page.title %}

_includes/post_list.html

@@ -1,9 +1,20 @@
 <ul>
   {% for post in site.posts %}
-
+  {% assign post_date = post.date | date: site.theme_config.date_format %}
   <li>
-    {{ post.date | date: site.theme_config.date_format }} <a href="{{ post.url | relative_url }}">{{ post.title | downcase }}</a>
+    <div class="new" data-post-date="{{ post_date}}">{{ post_date }} <a href="{{ post.url | relative_url }}">{{ post.title | downcase }}</a></div>
   </li>
 
   {% endfor %}
 </ul>
+
+<script type="text/javascript">
+  let posts = document.getElementsByClassName("new");
+  const now = moment();
+  for (let post_date of posts) {
+    let pdate = moment(post_date.dataset.postDate);
+    if (now.isoWeek() == pdate.isoWeek()) {
+      post_date.innerHTML = "<b>[new!]</b> " + post_date.textContent;
+    }
+  }
+</script>