diffrence between server side and client side programming?

Client side (CS) and server side(SS) is a different way of programming and script. CS is used to show any website without processing and it done in the client side like PC that you are using now. Example javascript. You can see the script from the client. SS is a used to process a request from client to a server. For an eample you want to sign up to MyLOt forum. The SS of myLot server will process your request and save into a database