title: Why does jQuery throw the error `fadeOut is not a function'?
body: <p>I am using jQuery and put this code in my javascript:</p>
  
  <pre><code>function HideMe(itemID) {
      var myDiv = 'item_' + itemID;
      $(myDiv).fadeOut("slow");
  }
  </code></pre>
  
  <p>But its giving me this error: <em><code>fadeOut</code> is not a function</em>.</p>