Summary

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Client-side technologies are a very important component of Web sites. The evolution of scripting technologies has offloaded some of the processing that traditionally occurred on the server. For example, validating form field entries by using JavaScript or VBScript on the client side makes more sense than relegating this processing to the server. Script can be integrated in markup using the script element as well as event handler attributes such as onclick . Just as developers should avoid mixing style and structure, they should also try to separate out the logic of a page in an external script wherever possible. Yet even with such separation, the paths of XHTML, CSS, and JavaScript are very intertwined. At its core , scripting is used to manipulate markup through the document object mode. The reliance between the technologies is great given that when markup is not well- formed the script may fail. However, if all the components of a page are working together correctly, pages can come to life bringing significant meaning to the idea of DHTML.

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