ptg16476052LESSON 18
18 Using jQuery
JavaScript is a programming language that makes it possible to manipu-
late the contents of web pages after they have loaded. jQuery and other
JavaScript libraries make it much easier to take advantage of JavaScript.
jQuery enables JavaScript programmers to code without worrying about
differences among browsers. It also provides a number of other features
that make it easy to build powerful JavaScript features without writing very
much code. In this lesson, you’ll learn about the following:
n What JavaScript libraries are and why you might want to use one
n How to use the jQuery library in your pages
n How to select elements on a page with jQuery
n How to bind events using jQuery
n How to manipulate styles on a page
n How to change the content of a page
n How to fetch content from an external source using AJAX