use of PickList/Jquery with Codeignitor and Grocery Crud

I have been working on a Grocery Crud based app. I am at the point where I need to add a picklist for users. Ultimately I will need to save the list that they pick in a table. Can I use Jquery with Codeigniter? I realize that Jquery is running on the client while Codeignitor is on the server. How can I interface Codeigniter/GC with a page that is using Picklist? Anyone have any examples? Right now I have a menu where a user can update various tables in MySQL. 

thx

proof that an old dog can learn new tricks

jquery is javascript library , so jquery is client side scripting

as long as i know, GC is using jquery by default, except you want to disabled it (like want to use another jquery version)