April 2007
Intermediate to advanced
720 pages
12h 52m
English
Content preview from Ajax Bible
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Chapter 10
Cascading Style Sheets and Ajax
IN THIS CHAPTER
- Creating an Ajax-enabled menu system
- Getting text noticed
- Scrolling text in the status bar
- Styling fonts
- Styling colors
- Setting absolute positions
When you work with Ajax, you're often going to be updating Web pages on the fly, and one of the best ways to do that is by using cascading style sheets (CSS). CSS is one of the more important Ajax-related topics, in fact, simply because updating Web pages is so important in Ajax.
You're going to see Ajax at work with CSS in this chapter; for the full, formal details on CSS, see the CSS specification at www.w3.org/TR/CSS21/.
CSS is great at positioning elements in a Web page and letting you work with those elements (as by using the mouse, for example). And this chapter starts with just such an example: an Ajax-enabled menu system that uses CSS to display drop-down menus and handle mouse events in them. Although this example uses a menu system, the techniques here show you how to create general popups in a Web page, which let you place text or other elements anywhere you want them.
Ajax-Enabled Menus
Take a look at the Ajax-enabled menu system you see in Figure 10.1, with two menus, Fruits and Vegetables.
FIGURE 10.1 The Ajax-enabled menu application
When the user positions ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.