Chapter 12
DOM Levels 2 and 3
WHAT’S IN THIS CHAPTER?
- Changes to the DOM introduced in Levels 2 and 3
- The DOM API for manipulating styles
- Working with DOM traversal and ranges
The first level of the DOM focuses on defining the underlying structure of HTML and XML documents. DOM Levels 2 and 3 build on this structure to introduce more interactivity and support for more advanced XML features. As a result, DOM Levels 2 and 3 actually consist of several modules that, although related, describe very specific subsets of the DOM. These modules are as follows:
- DOM Core — Builds on the Level 1 core, adding methods and properties to nodes.
- DOM Views — Defines different views for a document based on stylistic information.
- DOM Events — Explains how to tie interactivity to DOM documents using events.
- DOM Style — Defines how to programmatically access and change CSS styling information.
- DOM Traversal and Range — Introduces new interfaces for traversing a DOM document and selecting specific parts of it.
- DOM HTML — Builds on the Level 1 HTML, adding properties, methods, and new interfaces.
This chapter explores each of these modules except for DOM events, which are covered fully in Chapter 13.
DOM Level 3 also contains the XPath module and the Load and Save module. These are discussed in Chapter 18.
DOM CHANGES
The purpose of the DOM Levels 2 and 3 Core is to expand the DOM API to encompass ...
