title: Populate Dropdown only if dropdown is clicked
body: <p>I can't manage to find out how to initiate a click event by a user clicking on a dropdown.  I want to populate the dropdown ONLY if the user clicks the dropdown which will be rare.  In addition, it depends on several other values selected on the page.  So basically, how do I fire off an event if a user just simply clicks on the dropdown to see the options.</p>
  
  <p>I've tried, <code>$('select').click</code> but to no avail.</p>
  
  <p>It works if you don't have any options.  But if there are current options, no luck.</p>