title: jquery selector syntax $( [] ) and $("*")
body: <p>The following line of code comes from the official <a href="http://jqueryui.com/demos/dialog/#modal-form" rel="nofollow">dialog/#modal-form example</a></p>
  
  <pre><code>allFields = $( [] ).add( name )
  </code></pre>
  
  <p>Could someone please clarify what <code>$( [] )</code> does? Is it the same as <code>$("*")</code>?</p>
  
  <p>Another thing puzzled me is that I did not see <code>allFields</code> being added/appended to anywhere/any object, it is only created and modified. Am I missing something?</p>