It has various options by which you can manage the Datepicker layout e.g. change default date format, restricting date range, show year dropdown, etc.
While using this Widget you may have condition arises where you want to highlight some of the specific dates or change background-color of Holidays, events Days.
You can do this with
beforeShowDay option in the datepicker() method. This allows you specify CSS class which contains your defined CSS style.