title: Set description meta tag
body: <p>I have recently added the following line of Javascript code to a few pages on my site, in order to pull the title tag from the H1 element with the CSS class of "Category-H1".</p>
  
  <pre><code>document.title = document.getElementsByClassName("Category-H1")[0].innerHTML;
  </code></pre>
  
  <p>I am curious, can I do something similar to pull in the description tag using JS from my H2 element?</p>