title: Uncaught TypeError: Object [Object object] has no method 'Sortable'
body: <p>I am a newbie of using jQuery and UI.</p>
  
  <p>I am using the Sortable method: <code>$('#div').Sortable()</code></p>
  
  <p>and got this error: </p>
  
  <blockquote>
    <p>Uncaught TypeError: Object [Object object] has no method 'Sortable'</p>
  </blockquote>
  
  <p>Even I have included all of the jQuery files needed:</p>
  
  <pre><code>&lt;script type="text/javascript" src="./drag/jquery-1.8.0.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="./drag/jquery-ui-1.8.23.custom.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="./drag/jquery.ui.core.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="./drag/jquery.ui.mouse.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="./drag/jquery.ui.widget.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="./drag/jquery.ui.sortable.min.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>So what is the problem here?</p>