title: JQuery Add class to certain list item
body: <p>I am trying to add a script that will add a class to a list item that I choose..</p>
  
  <p>I have tried this but it didnt add the class</p>
  
  <pre><code>$('.navigation ul li').get(0).addClass("active");
  </code></pre>
  
  <p>What Am i doing wrong?</p>