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Understanding the DOM Part 2

by Nate Zelnick Details, details... Last time we went over the Document Object Model at a high level. Now we’ll dig in a little, and talk about how the proposed recommendation from the W3C will work. As with a lot of the really interesting stuff going on with XML these days, the specs precede the implementations, so there isn’t a good test bed available, but I promise I’ll point to one when one becomes available.While Part One of this series covered the general ideas of what a DOM is, this time we’ll look specifically at the philosophy, structure and terminology of the W3C proposal. We’ll finish up next time with a look at the methods that let developers create XML documents and manipulate them.The W3C DOM Working Group’s mission was a tough one. They had to define a very general structure for what a document is, shoehorn as much of the devolved HTML material into that as they could, and provide a general set of constructs that would be usable across all different types of programming environments, languages and styles. Because of that, there is much defined in the proposed recommendation that is up to the platform vendors and parser creators who will implement the basic DOM interfaces.


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