Modular Visualforce

Visualforce pages that are modular, composed of a number of smaller, reusable building blocks, improve usability by providing consistent appearance and behavior. They are also easier to develop and maintain. Common functionality is defined once in a single place rather than repeated in multiple pages.

Visualforce provides several features you can use to create modular, highly maintainable pages:

Static resources—Reusable images, scripts, stylesheets, and other static content can be stored in static resources, available for embedding in all Visualforce pages in the Force.com organization.

Inclusion—The contents of one Visualforce page can be included in another page. A common use for this is page headers and footers.

Composition—Composition allows one Visualforce page to serve as a template for another. The template specifies the static and dynamic portions of a page. Use the template to inject dynamic content while maintaining a consistent page layout and structure.

Custom Visualforce components—Visualforce provides a library of standard components such as pageBlock and dataTable, but also allows you to define your own custom components, reusable in any page.