title: Basic JavaScript EventListener NOT work?
body: <p>I'm trying to learn the basics of JavaScript
  I cant figure out why this doesn't work...it's so basic?</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;meta charset="utf-8" /&gt;
  &lt;style type="text/css"&gt;
      ul{
          list-style-type:none;
      }
      div{
          width:300px;
          height:200px;
          background-color:#0066cc;
      }
  &lt;/style&gt;
  
  &lt;script language="text/javascript"&gt; 
      var testing = document.getElementById("addBtn");
      testing.addEventListener("click", function(e){ alert("test") } , false);
  &lt;/script&gt;
  
  &lt;/head&gt;
  &lt;body&gt;
  &lt;ul id="placeholder"&gt;&lt;/ul&gt;
  &lt;a href="#" id="addBtn"&gt;Add&lt;/a&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>