Book Image

Learning jQuery - Fourth Edition

By : Karl Swedberg, Jonathan Chaffer
Book Image

Learning jQuery - Fourth Edition

By: Karl Swedberg, Jonathan Chaffer

Overview of this book

To build interesting, interactive sites, developers are turning to JavaScript libraries such as jQuery to automate common tasks and simplify complicated ones. Because many web developers have more experience with HTML and CSS than with JavaScript, the library's design lends itself to a quick start for designers with little programming experience. Experienced programmers will also be aided by its conceptual consistency. LearningjQuery - Fourth Edition is revised and updated version of jQuery. You will learn the basics of jQuery for adding interactions and animations to your pages. Even if previous attempts at writing JavaScript have left you baffled, this book will guide you past the pitfalls associated with AJAX, events, effects, and advanced JavaScript language features. Starting with an introduction to jQuery, you will first be shown how to write a functioning jQuery program in just three lines of code. Learn how to add impact to your actions through a set of simple visual effects and to create, copy, reassemble, and embellish content using jQuery's DOM modification methods. The book will take you through many detailed, real-world examples, and even equip you to extend the jQuery library itself with your own plug-ins.
Table of Contents (24 chapters)
Learning jQuery Fourth Edition
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Other types of plugins


Plugins need not be limited to providing additional jQuery methods. They can extend the library in many ways, and even alter the functionality of existing features.

Plugins can change the way other parts of the jQuery library operate. Some offer new animation easing styles, for instance, or trigger additional jQuery events in response to user actions. The Cycle plugin offers such an enhancement by adding a new custom selector.

Custom selectors

Plugins that add custom selector expressions increase the capabilities of jQuery's built-in selector engine, so that we can find elements on the page in new ways. Cycle adds a custom selector of this kind, which gives us an opportunity to explore this capability.

Cycle's slideshows can be paused and resumed by calling .cycle('pause') and .cycle('resume') respectively. We can easily add buttons that control the slideshow, as shown in the following code:

$(document).ready(function() {
  var $books = $('#books');
  var $controls = $...