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Chapter 19. Adding Dynamic HTML > What Is Dynamic HTML?

What Is Dynamic HTML?

Let’s begin the definition of Dynamic HTML by discussing what it isn’t—it isn’t an official standard. HTML has become XHTML, and CSS is a standard, as is the Document Object Model. But Dynamic HTML is really something more of a marketing term, or an unofficial name, meant to suggest using scripting and the DOM together to do things on the page—usually visual tricks. Dynamic HTML sometimes means that you’re using scripts to alter your style sheet properties. It can also sometimes mean you’re incorporating technology called layers, which enable different parts of a document to overlap and even hide one another.

In fact, you have already seen some minor examples of Dynamic HTML in Chapter 18, “JavaScript and User Input,” when you saw the images array being accessed and the document object being opened and rewritten. We’ll take those examples further in this chapter, and we’ll cover some new technologies. First, let’s complete the definition of Dynamic HTML by taking another look at the DOM, as well as some other important technologies.


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