The datepicker is best used in spacial situations. Meaning you want the user to be able to easily select "last thursday" or "a friday in march". Selecting a birthday with a datepicker takes many clicks, especially when the default datepicker only allows paging through months to keep things simple.
Adds a date picker to an input field.
If you are asking for a distant date, we suggest using the Date Picker Dropdown pattern
Start with an <input> that has a class of datepicker.
This uses the jQuery UI plugin straight out of the box. See the jQuery UI site for documentation.
There is no currently exposed API via the IxF.