January 2011
Intermediate to advanced
224 pages
5h 43m
English
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Chapter 10. The Document Object Model
In Chapter 9 we saw JavaScript objects that
represented the form and input tags from an HTML
document. Such objects are part of a structure called the Document Object
Model (DOM). Every tag in the document is represented by an object in this model
and can be looked up and interacted with.
DOM Elements
HTML documents have a hierarchical structure. Each element (tag) except the top <html> element is contained in another element, called its
parent. This element can in turn contain child
elements. You can visualize this as a kind of family tree. If we have a simple document like
this:
<html> <head> <title>Alchemy for beginners</title> <script type="text/javascript" src="js/base.js"></script> </head> <body> <h1>Chapter ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.