Summary of the DOM Objects and Collections
As you have seen in the preceding sections, the objects and collections in the W3C DOM give you flexibility in manipulating the elements of a web page. We have shown how to access the objects in a page, how to access the objects in a collection, and how to change element styles dynamically.
The W3C DOM allows you to access every element in an XHTML document. Each element in a document is represented by a separate object. The diagram in Fig. 12.6 shows many of the important objects and collections provided by the W3C DOM. Figure 12.7 provides a brief description of each object and collection in Fig. 12.6.
For a complete reference on the W3C Document Object Model, see the DOM Level 3 recommendation from the W3C at http://www.w3.org/TR/DOM-Level-3-Core/. The DOM Level 2 HTML Specification (the most recent HTML DOM standard), available at http://www.w3.org/TR/DOM-Level-2-HTML/, describes additional DOM functionality specific to HTML, such as objects for various types of XHTML elements. Keep in mind that not all web browsers implement all features included in the specification.
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