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Storage Networking , Part 1
eBook: A storage network is any network that's designed to transport block-level storage protocols. But understanding the ins and outs of networked storage takes you deep into several of protocols. This guide covers SANs, Fibre Channels, Disk Arrays, Fabric, and IP Storage. »

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HP StorageWorks EVA4400
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Top 10 Articles
  1. Web Developer's Virtual Library: Encyclopedia of Web Design Tutorials, Articles and Discussions
  2. JavaScript Tutorial for Programmers
  3. Design
  4. JavaScript Tutorial for Programmers - Objects
  5. JavaScript Tutorial for Programmers - JavaScript Grammar
  6. JavaScript Tutorial for Programmers - Versions of JavaScript
  7. Cascading Style Sheets
  8. JavaScript Tutorial for Programmers - Embedding JavaScript
  9. JavaScript Tutorial for Programmers - Functions
  10. Authoring JavaScript
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XML via the Document Object Model: A Preliminary Course

December 21, 1998

XML is a powerful, flexible, and intuitive way to structure data but it does not, by itself, process, manipulate, or output data as such.

XML is the new kid on the block, a technology which promises great potential for web development, though still unproven in widespread application. While XML is a powerful, flexible, and intuitive way to structure data, it does not, by itself, process the data as such. One technology which can be employed to process XML data is the Document Object Model, a construct which provides programmatic access to the components of an XML document. Using a DOM-supporting programming language, such as the lightweight JavaScript scripting language, one can maneuver within the XML data to perform queries, processing, or modifications.

But there's a catch: At the time of writing, only Internet Explorer 5 beta 2 contains internal support for exposing XML data via the Document Object Model. While we can be relatively sure that this support will follow through the release version of MSIE 5, the question of how similarly Netscape 5 will reflect XML via its DOM remains an unknown. Technology instruction is always a process of blazing paths across quicksand, but perhaps moreso at this early stage of XML's maturity.

Caveats aside, it is worthwhile to begin exploring XML processing even at this early stage. Traversing XML via the DOM requires a combination of conceptual understanding and syntactical execution; the latter may change with revisions of technology but the former will lead to mastery. So, that's where we'll begin.

This article must assume a working knowledge of an object-oriented programming language which accesses the Document Object Model; although most of our examples are language-neutral, we'll consider JavaScript to be the base of reference. Introductions to both JavaScript and XML can be found right here at the WDVL, including "JavaScript Tutorial for Programmers" and "Introduction to XML". We will briefly summarize each as a memory refreshment.


Contents:

Refresher: Object-oriented programming; e.g. JavaScript


Up to => Home / Authoring / Languages / XML / DOM




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