jquery Date Format , date changes to today date

jquery Date Format , date changes to today date

I have datepicker control to which when date is assigned there is some abnormal issues related to format.

1.When date returned in dd/mm/yyyy format from server side and jquery dateformat is set to dd/MM/yyyy then date does not change

2.When date returned in dd/mm/yyyy format from server side and jquery dateformat is set to dd-M-yy then date changes to todays date not as send by server side code