What is a server-side system?

JavaScript is the server-side language used to develop services for the Opera Unite feature of the Opera browser . This is a server built into the browser. The JavaScript API includes local file access to a virtual sandboxed file-system and persistent storage via persistent global variables.

Client-side means that the action takes place on the user’s (the client’s) computer. Server-side means that the action takes place on a web server .

Server-side is the systems that run on the server , and client-side is the software that runs on a user’s web browser. Client-side web development involves interactivity and displaying data, server-side is about working behind the scenes to manage data.