How to place JQuery Date Picker for DOB

Question

Hi There,

 

 

I have a requirement for date field, to placing a date picker. Here right now am using HTML date picker, but it is not a user friendly. Then i planned to place  a Zebra date picker, i place for date field using zebra date picker, date picker is not applied as i place based on demo. I gave script files also. can any one help me how to fix it.