title: Meteor add active class (coffeescript)
body: <p>I'm not sure where I'm going wrong here. </p>
  
  <pre><code>&lt;li class="alph-filter-button-unit" value="A"&gt;A&lt;/li&gt;
  &lt;li class="alph-filter-button-unit" value="B"&gt;B&lt;/li&gt;
  &lt;li class="alph-filter-button-unit" value="C"&gt;C&lt;/li&gt;
  &lt;li class="alph-filter-button-unit" value="D"&gt;D&lt;/li&gt;
  </code></pre>
  
  <p>Coffeescript:</p>
  
  <pre><code>  "click .alph-filter-button-unit":(e) -&gt;
      $(e).addClass("filter-active")
  </code></pre>
  
  <p>I want to just add a class "filter-active" onto the "alph-filter-button-unit" that is clicked. There are no errors on the console either.</p>