Document object model : processing structured documents by Joe Marini

By Joe Marini

Rfile item version Analogy: in lots of methods, the record item version (DOM) may be in comparison to the schematic of a home. A house's schematic information the relation and site of gadgets inside a home. for example, inside a schematic, you may comprehend the connection of the sink to the wall, in addition to the corresponding plumbing. In different phrases, the schematic defines the connection of 1 item to a different and infrequently, illustrates the foundations in which they're ruled. HTML and XML files also are composed of items, and even if those gadgets is probably not actual, like a sink, their supplier and interplay continues to be coordinated by means of a suite of principles. as a consequence, the DOM acts as a origin for the location and interplay of gadgets inside of a record. even if the item is a desk, a section of data, or a script, the DOM specifies a version for the interplay of those gadgets. For builders, an intensive knowing of those relationships is paramount, and sometimes, it kinds the root for a system's improvement.

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When a module provides support for a specific type of style sheet language, it includes interfaces that are derived from these base interfaces. For example, the CSS module provides interfaces that allow programmatic access to CSS constructs from within DOM applications. Views Provides interfaces that allow documents to have more than one view of the document source. For example, a document may have a view that is computed in real time, such as the application of style sheets, or it may have several views in different browser frames of the same document.

The Fundamental Core DOM Interfaces In this section, we introduce the interfaces that are fundamental to manipulating information inside of a DOM document. We will cover only the interfaces in this section that are related to working with documents that contain HTML and XML content. The next section will cover the extended Core interfaces, which deal with the set of interfaces needed for working with XML-specific document structure elements. We’ll start by taking a look at the specific types of errors that can occur while working with the fundamental interfaces, and then introduce and walk through the basic Node interface.

The DOM spec provides interfaces in the form of createxxx() on the Document interface, where xxx is the type of document object to be created. 4. ” This is pretty self-explanatory. The DOM specification does not specify anything having to do with multithreading or other thread-safety topics. For the moment, this is left up to individual implementations. What the DOM Isn’t Now that we’ve spent the better part of the chapter discussing what the DOM is, we’ll take a moment and point out a few of the things that the DOM is not (in fact, the actual W3C specification goes out of its way to do pretty much the same thing— perhaps they wanted to avoid any misconceptions of the DOM as early as possible): The DOM isn’t a way of creating programs that are, in the spec’s words, “binary compatible,” in other words, usable across disparate computer systems without recompiling.

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