the update panel or asynchrounous post back has nothing to do with client side
but then when i enter something in textbox logically i need to get its value on both client as well as server(postback)
on server side i get but on client i get blank
u r right i mean this is the ideal way of getting value
but the fact is i am getting blank
i tried all the methods to check out
but the value entered in text box is lost