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Learning jQuery, Third Edition

Learning jQuery, Third Edition

4.4 (23)
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Learning jQuery, Third Edition

Learning jQuery, Third Edition

4.4 (23)

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.Learning jQuery Third Edition is revised and updated for version 1.6 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 step 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)
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Learning jQuery Third Edition
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
4
Index

Chapter 9. Advanced Selectors and Traversing

In January 2009, jQuery's creator John Resig introduced a new open source JavaScript project called Sizzle . A standalone CSS selector engine , Sizzle was written to allow any JavaScript library to use it with little or no modification to its codebase. In fact, jQuery has adopted Sizzle as its own selector engine ever since version 1.3.

Sizzle is the component within jQuery that is responsible for parsing the CSS selector expressions we put into the $() function. It determines which native DOM methods to use as it builds a collection of elements that we can then act on with other jQuery methods. The combination of Sizzle and jQuery's set of traversal methods makes jQuery an extremely powerful tool for finding elements on the page. It boasts a large set of features, an extensible architecture, and a finely-tuned set of internal functions for outstanding power, flexibility, and speed.

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Learning jQuery, Third Edition
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