JavaScript and Ajax for the Web: Visual QuickStart Guide, Seventh Edition

DOM-2 terminology

At the beginning of this book, we referred to JavaScript as “the snap-together language,” because of the way that you can put objects, properties, and methods together to build JavaScript applications. There’s a different way to look at HTML pages that we’ve only briefly mentioned before: as a tree structure with nodes. For example, this simple Web page

<html>
<head>
    <title>My page</title>
</head>
<body>
    <p>This is text on my page</p>
</body>
</html>

can be displayed as seen in Figure 11.1.

Figure 11.1. The tree structure, showing nodes, is just another way of looking at how an HTML page is organized.

We can use JavaScript ...