jQuery UI datepicker will not display - full code included

Question

I am having trouble displaying the jQuery datepicker as shown here: http://jqueryui.com/demos/datepicker/

I believe I downloaded all of the proper files, but to be c

Answer 1

If you look carefully at the source code of jQuery UI lib you can see that it uses hasDatepicker class inside for datepicker. So, use any other class (even hasdatepicker works) but not hasDatepicker:

or: