9.1. An introduction to moving objects

Programming moving objects on the Web is the art of combining various Web technologies. It is the first step toward the goal of creating sophisticated dynamic pages. In general, we consider an XHTML page as dynamic if its content contains dynamic programming or features. Under this broad definition, almost all examples and XHTML pages in this book are dynamic. Moving objects are certainly one of them. Some people may see the contents of this chapter more as Dynamic HTML (DHTML). Since DHTML is not a standard defined by the W3C authority or anyone else, we don’t want to create yet another keyword here. Instead our discussion will concentrate on the construction of moving objects and how to program them. ...

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