The client is the computer system (including tablets and mobile devices) that is running the web browser. Client-side scripts are ... will always require server-side scripting.

A small program run on the server that automates or controls certain functions or links one program to another. On the Web, a CGI script is an example of a server-side script. Contrast with client ...

A small program that is run on the user's machine. For example, JavaScript scripts are widely used on Web pages that are executed in the client machine. Contrast with server-side script.