So I did some reading of the related questions and had some interesting stuff but did not find my answer, at least did not understand the answer.
I am very new to AJ
"jQuery UI Datepicker does not work after ajax partial postback"
Place a script manager and an update panel on the page.
Now place a text box and a button inside the updatepanel control.
Select Date :
Now bind the datepicker control with the text box.
pageLoad() function is available in JavaScript if you are using ASP.NET ajax. AJAX framework automatically wires up any client-side function named pageLoad() as an Application.Load handler
Source Link Credits
http://www.jquerybyexample.net/2010/08/jquery-datepicker-does-not-work-after.html