Hi,
how does it matter by which (user or JS) the input has been changed? You
still get the input via TextBox's Text property as long as the TextBox
itself is server-side control.
If you need to identify by which one the input was made, you can populate
separate, server-side, hidden INPUT field which you could read on postback
so that it indicates which one, user or JS code, made the change to the data
(js code could change its value at the same time when it changes TextBox's
text).
--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU
http://blogs.aspadvice.com/joteke