Wiley JavaScript and AJAX for Dummies (2010).pdf

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JavaScript & AJAX for Dummies
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JavaScript ® & AJAX
FOR
DUMmIES
by Andy Harris
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JavaScript ® & AJAX For Dummies ®
Published by
Wiley Publishing, Inc.
111 River Street
Hoboken, NJ 07030-5774
www.wiley.com
Copyright © 2010 by Wiley Publishing, Inc., Indianapolis, Indiana
Published by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or
by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permit-
ted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written
permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the
Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600.
Requests to the Publisher for permission should be addressed to the Permission Department, John Wiley
& Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://
Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the
Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, Making Everything
Easier, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/
or its af liates in the United States and other countries, and may not be used without written permission.
JavaScript is a registered trademark of Sun Microsystems, Inc. All other trademarks are the property of
their respective owners. Wiley Publishing, Inc. is not associated with any product or vendor mentioned in
this book.
LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO
REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF
THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITH-
OUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTY MAY BE
CREATED OR EXTENDED BY SALES OR PROMOTIONAL MATERIALS. THE ADVICE AND STRATEGIES
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UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR
OTHER PROFESSIONAL SERVICES. IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF
A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT. NEITHER THE PUBLISHER NOR THE
AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING HEREFROM. THE FACT THAT AN ORGANIZA-
TION OR WEBSITE IS REFERRED TO IN THIS WORK AS A CITATION AND/OR A POTENTIAL SOURCE
OF FURTHER INFORMATION DOES NOT MEAN THAT THE AUTHOR OR THE PUBLISHER ENDORSES
THE INFORMATION THE ORGANIZATION OR WEBSITE MAY PROVIDE OR RECOMMENDATIONS IT
MAY MAKE. FURTHER, READERS SHOULD BE AWARE THAT INTERNET WEBSITES LISTED IN THIS
WORK MAY HAVE CHANGED OR DISAPPEARED BETWEEN WHEN THIS WORK WAS WRITTEN AND
WHEN IT IS READ.
For general information on our other products and services, please contact our Customer Care
Department within the U.S. at 877-762-2974, outside the U.S. at 317-572-3993, or fax 317-572-4002.
For technical support, please visit www.wiley.com/techsupport .
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not be available in electronic books.
Library of Congress Control Number: 2009939782
ISBN: 978-0-470-41799-7
Manufactured in the United States of America
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About the Author
Andy Harris began his teaching life as a special education teacher. As he was
teaching young adults with severe disabilities, he taught himself enough com-
puter programming to support his teaching habit with freelance programming.
Those were the exciting days when computers started to have hard drives,
and some computers began communicating with each other over an arcane
mechanism some were calling the Internet.
All this time Andy was teaching computer science part time. He joined the
faculty of the Indiana University-Purdue University Indianapolis Computer
Science department in 1995. He serves as a Senior Lecturer, teaching the
introductory course to freshmen as well as numerous courses on Web
development, general programming, and game programming. As manager
of the Streaming Media Laboratory, he developed a number of online video-
based courses, and worked on a number of international distance education
projects including helping to start a computer science program in Tetevo,
Macedonia FYR.
Andy is the author of several other computing books including HTML,
XHTML, and CSS All-in-One Desktop Reference For Dummies , Flash Game
Programming For Dummies , and Game Programming: the L Line . He invites
your comments and questions at andy@aharrisbooks.net , You can visit
his main site and nd a blog, forum, and links to other books at http://
www.aharrisbooks.net .
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