Web browsers are applications for displaying web pages. A host of special-purpose languages has developed to control their operation. Client-side scripting generally refers to the class of computer programs on the web that are executed client-side (by the user's web browser) instead of server-side (on the web server). The scripting technology is an important part of the Dynamic HTML (DHTML) concept which enables web pages to have different and changing content depending on user input, environmental conditions, or other variables.

Server-side scripting is a web server technology in which a user's request is fulfilled by running a script directly on the web server to generate dynamic web pages. It is usually used to provide interactive web sites that interface to databases or other data stores.

The client-side scripting where scripts are run by the viewing web browser. The primary advantage to server-side scripting is the ability to highly customize the response based on the user's requirements, access rights, or queries into data stores.