Call your datepicker()
for each input on document load..
Use a class
as a hook on your input:
<input class="my-datepicker">
Then call datepicker
on elements with that class with your default configuration:
$('.my-datepicker').datepicker({
dateFormat: 'm/d/Y'
});
When you need a different configuration, use/assign a different class name.
You can also use setDefaults
(probably what you're looking for):
$.datepicker.setDefaults({
dateFormat: 'm/d/Y'
});