tailieunhanh - PURE JavaScript Second Edition

In the beginning, there were Assembly and compiled languages. Later came scripting languages such as sed, awk, and Perl, which many programmers used to perform a variety of tasks. Followed by, in the late 80s and early 90s, the Internet, which exploded into a technological revolution that allowed anyone with a modem to communicate and retrieve information from around the world. As the Internet grew in number of users, it was obvious that an increase in functionality was needed in the browsers and the data they were rendering | PURE SÀMS 201 West 103rd Street Indianapolis Indiana 46290 Pure JavaScript Second Edition Copyright 2002 by Sams Publishing All rights reserved. No part of this book shall be reproduced stored in a retrieval system or transmitted by any means electronic mechanical photocopying recording or otherwise without written permission from the publisher. No patent liability is assumed with respect to the use of the information contained herein. Although every precaution has been taken in the preparation of this book the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein. International Standard Book Number 0-672-32141-6 Library of Congress Catalog Card Number 00-111512 Printed in the United States of America First Printing August 2001 04 03 02 01 4 3 2 1 Trademarks All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Sams Publishing cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark. Warning and Disclaimer Every effort has been made to make this book as complete and as accurate as possible but no warranty or fitness is implied. The information provided is on an as is basis. The author s and the publisher shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of the CD or programs accompanying it. Acquisitions Editor Shelley Johnston Markanday Development Editor Jonathan Steever Managing Editor Charlotte Clapp Project Editor Elizabeth Finney Copy Editor Rhonda Tinch-Mize Indexer Sandra Henselmeier Proofreaders Antonio Reitz Rebecca Martin Debra Sexton Technical Editor Andrew Watt Team Coordinator Amy Patton Media Developer Dan Scherf Interior Designer Karen Ruggles .