2. JavaScript and the Document Object Model
Back to the Basics
The most important technology in a Web designer's toolkit is HTML. Without a markup language, you can't give the content any structure. Once the markup structure is in place, it can be enhanced with other technologies, such as CSS and JavaScript.
This chapter will serve as a crash course in JavaScript, a technology that is essential for Ajax. If you are already well-versed in JavaScript, you can skip this chapter although you might still appreciate this reminder of syntax and terminology.
JavaScript
Whereas HTML is a markup language, JavaScript is a programming language. Instead of specifying structure, it performs logical operations and calculations.
There are plenty of programming ...
Get Bulletproof Ajax now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
