title: FontAwesome circle-o-notch, show on click
body: <p>I'm trying to add a spinning circle to a button on click.
  Here's the code - <a href="https://jsfiddle.net/3upgdxuv/1/" rel="nofollow noreferrer">https://jsfiddle.net/3upgdxuv/1/</a></p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>$('.button').on('click', function() {
    $(this).find('i').addClass('fa fa-circle-o-notch fa-spin')
  })</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script defer src="https://use.fontawesome.com/releases/v5.0.9/js/all.js" integrity="sha384-8iPTk2s/jMVj81dnzb/iFR2sdA7u06vHJyyLlAd4snFpCl/SnyUjRrbdJsw1pGIl" crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;button CLASS="button"&gt;
    &lt;i&gt;&lt;/i&gt; dada
  &lt;/button&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I don't understand what I'm not doing properly.
  Regards</p>