Jquery

jQuery Cookbook

jQuery Cookbook

jQuery Community Experts

Beijing • Cambridge • Farnham • Köln • Sebastopol • Taipei • Tokyo

jQuery Cookbook
by jQuery Community Experts
Copyright © 2010 Cody Lindley. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may bepurchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/institutional sales department: 800-998-9938 or corporate@oreilly.com.

Editor: Simon St.Laurent Production Editor: Sarah Schneider Copyeditor: Kim Wimpsett Proofreader: Andrea Fox Production Services: Molly SharpPrinting History:
November 2009: First Edition.

Indexer: Fred Brown Cover Designer: Karen Montgomery Interior Designer: David Futato Illustrator: Robert Romano

O’Reilly and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. jQuery Cookbook, the image of an ermine, and related trade dress are trademarks of O’Reilly Media, Inc. Many of the designations used by manufacturersand sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly Media, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps.
While every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions, or for damagesresulting from the use of the information contained herein.

TM

This book uses RepKover, a durable and flexible lay-flat binding.
ISBN: 978-0-596-15977-1 [S] 1257774409

Table of Contents

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Contributors . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii 1. jQuery Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Including the jQueryLibrary Code in an HTML Page 1.2 Executing jQuery/JavaScript Coded After the DOM Has Loaded but Before Complete Page Load 1.3 Selecting DOM Elements Using Selectors and the jQuery Function 1.4 Selecting DOM Elements Within a Specified Context 1.5 Filtering a Wrapper Set of DOM Elements 1.6 Finding Descendant Elements Within the Currently Selected Wrapper Set 1.7 Returning to the Prior SelectionBefore a Destructive Change 1.8 Including the Previous Selection with the Current Selection 1.9 Traversing the DOM Based on Your Current Context to Acquire a New Set of DOM Elements 1.10 Creating, Operating on, and Inserting DOM Elements 1.11 Removing DOM Elements 1.12 Replacing DOM Elements 1.13 Cloning DOM Elements 1.14 Getting, Setting, and Removing DOM Element Attributes 1.15 Getting and SettingHTML Content 1.16 Getting and Setting Text Content 1.17 Using the $ Alias Without Creating Global Conflicts 9 10 13 15 16 18 19 20 21 23 24 26 27 29 30 31 32

2. Selecting Elements with jQuery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.1 Selecting Child Elements Only 2.2 Selecting Specific Siblings 36 37

v

2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.112.12

Selecting Elements by Index Order Selecting Elements That Are Currently Animating Selecting Elements Based on What They Contain Selecting Elements by What They Don’t Match Selecting Elements Based on Their Visibility Selecting Elements Based on Attributes Selecting Form Elements by Type Selecting an Element with Specific Characteristics Using the Context Parameter Creating a Custom...