reasking some basics to clear out from this messed up things
1) difference between using normal array & using hashtable in terms of storage, access speed
2) is it possible to store values from serverside controls in javascript on client side in a normal array variable ( values can be of different types) even on postback??.
if yes how
3) currently i have hidden fields which stores values on client side and on postback saves in hashtable ie saving data on server & not on client
will this casue any performance issue