Add thousands separator filter

src/_config/filters.js

@@ -24,4 +24,9 @@ export default function(eleventyConfig) {
     eleventyConfig.addFilter("itemLimit", function(array, itemLimit) {
         return array.slice(0, itemLimit);
     });
+
+    // Thousands separator
+    eleventyConfig.addFilter("thousands", function(num) {
+        return num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
+    });
 }

src/_includes/global/content.njk

@@ -18,7 +18,7 @@
     {% if isArticle %}
         <div class="article__info">
             <p class="article__info--desc">{{ desc }}</p>
-            <p>{{ content | wordcount }} words. Posted on {{ date | formatDate }} by {{ sitemeta.siteAuthor.name }}</p>
+            <p>{{ content | wordcount | thousands }} words. Posted on {{ date | formatDate }} by {{ sitemeta.siteAuthor.name }}</p>
         {% if updated %}
             <p>Last updated on {{ updated | formatDate }}</p>
         {% endif %}