Advanced Javascript: .

by Chuck Easttom

Overview

Advanced JavaScript, Third Edition provides an in-depth examination of the most important features of JavaScript. Beginning with an overview of JavaScript, the book quickly moves into more advanced features needed for complex yet robust JavaScript scripts, such as objects, arrays, and date and time functions. Additionally, various features of JavaScript that are essential for modern web pages are discussed, including manipulating the status bar, creating dynamic calendars, and working with forms, images, and the Document Object Model. Numerous examples illustrate how to implement various techniques.Topics covered how to enhance your web pages with LED signs, banners, and images; implementing cookies to store and retrieve information; the structure of the Document Object Model and how it can be used to view, access, and change an HTML document; Security measures to protect private information while using the Internet.

Product Details

ISBN-13:	9781449627225
Publisher:	Jones & Bartlett Learning
Publication date:	08/29/2007
Sold by:	Barnes & Noble
Format:	eBook
Pages:	591
File size:	3 MB

About the Author

Adjunct Lecturer, Georgetown University, Adjunct Professor, University of Dallas

Table of Contents

	Acknowledgments	xxviii
	Introduction	xxix
Chapter 1	Introduction to JavaScript	1
	The World Wide Web	1
	Competition on the Web	1
	Extending HTML	2
	CGI Programs	3
	Helpers, Plug-ins, Applets, and CGI	3
	What is JavaScript?	5
	Who Can Benefit from JavaScript?	5
	The History of JavaScript	6
	JavaScript in a Browser	6
	What Can JavaScript Do?	7
	JavaScript and Java	9
	JavaScript's Current Status	12
	The Future of JavaScript	13
Chapter 2	HTML Primer	14
	HTML Tags	14
Chapter 3	Writing Your First JavaScript	21
	Essential Authoring Tools	21
	Basic JavaScript Structure	22
	Conventions	28
	Your First Script	30
	Printing JavaScript Output	32
	Updating a Page	32
	Summary	33
Chapter 4	JavaScript Fundamentals	34
	"Building" a Script	34
	Data Types in JavaScript	34
	JavaScript Entities	38
	Type Conversion	39
	Mixing Strings and Numbers	39
	Literals	40
	Operators	45
	Making Statements	46
	Evaluating Expressions	47
	Testing Evaluation	48
	Functions	48
	Control Structures in JavaScript	51
	Summary	67
Chapter 5	Object-Oriented Programming	68
	Objects	68
	Properties	69
	Methods	72
	Using the Array Notation	73
	Object Based Versus Object Oriented	73
	Summary	74
Chapter 6	Functions and Variable Scope	75
	Variable Scope and Storage Class	75
	What are Functions?	81
	Defining and Calling Functions	82
	Function Parameters	82
	Returning a Value	86
	Recursion	88
	Summary	92
Chapter 7	Utilizing JavaScript Operators	93
	Operator Categories	93
	Mathematical Operators	93
	String Operators	98
	Bitwise Operators	99
	Assignment Operators	105
	Relational Operators	106
	Short-Circuit Logical Operators	108
	More Logical Operators	110
	Data Type Operator	111
	Void Operator	112
	Operator Precedence	113
	Expressions	113
	Side Effects	114
	Summary	115
Chapter 8	JavaScript by Example--A Review	116
	Height and Weight Calculator	116
	Summary	131
Chapter 9	Events in JavaScript	132
	Events	132
	Event Handlers	135
	Emulating Events via Methods	141
	Calling Event Handlers Explicitly	142
	Cancelling Events	144
	Summary	144
Chapter 10	Building and Extending Objects	145
	Creating Instances	145
	Constructor Functions	146
	Nested Objects	149
	Prototype and Object Extensions	155
	Summary	158
Chapter 11	Arrays	159
	What is an Array?	159
	Some History	159
	Creating Simple Arrays	160
	Referring to an Array's Elements	161
	Creating Dense Arrays	162
	Array Types	163
	Array Properties	166
	Array Methods	167
	The arguments Array	181
	Multidimensional Arrays	184
	Associative Arrays	187
	Summary	190
Chapter 12	Time and Date in JavaScript	192
	The Date Object	192
	Creating a Date Instance	192
	Date Numeric Conventions	194
	Date Method Categories	194
	get Methods	195
	The set Methods	202
	to Methods	204
	parse Methods	205
	Time-Related Methods of Other Objects	206
	Time and Date Examples	208
	Summary	225
Chapter 13	JavaScript Math	226
	Math in JavaScript	226
	The Math Object	226
	Constants	227
	Math Methods	230
	The Number Object	235
	Math Examples	238
	General Plotting Utility	245
	Summary	258
Chapter 14	Handling Strings	259
	String Indexing	259
	Characters	259
	Creating Strings	259
	String Length	260
	HTML Formatting Methods	260
	General String Methods	262
	escape and unescape	264
	Number-to-String Conversion	265
	String-to-Number Conversion	268
	Evaluating Text Expressions	270
	String Handling Example	270
	Summary	273
Chapter 15	Browser Objects	274
	The Object Hierarchy	274
	Creating Browser Objects	275
	The Topmost Objects	275
	Summary	277
Chapter 16	Utilizing the Status Bar	278
	The Status Bar	278
	Writing to the Status Bar	278
	Setting a Default Value for the Status Bar	281
	Banners	282
	Summary	294
Chapter 17	URLs and JavaScript	295
	A Crash Course in URLs	295
	location Object	298
	location Properties	298
	location Methods	310
	Another Location--document.location (document.URL)	312
	Search Utilities	313
	Summary	317
Chapter 18	Using the History List	318
	What is a History List?	318
	The history Object	318
	History List Length	318
	History List Entry Indexing	319
	history Methods	319
	Security Aspects of the history Object	321
	Summary	321
Chapter 19	The document Object--Colors, Output, and Properties	322
	The document Object	322
	The title Property	322
	Colors	324
	Output Methods and Streams	333
	Summary	335
Chapter 20	Forms	337
	What are HTML Forms?	337
	JavaScript Form Reference	337
	form Object	338
	text Object	353
	password Object	365
	textarea Object	366
	hidden Object	369
	button, submit, and reset Objects	370
	checkbox Object	376
	radio Object	383
	Select Object	388
	FileUpload Object	401
	Summary	401
Chapter 21	Links, Anchors, and Image Maps	403
	Defining a Link	403
	Defining an Anchor	404
	Defining an Image Map Area	404
	Links Array	405
	Anchors Array	405
	Link and Area Event Handlers	406
	Link and Area Properties	410
	Referring Documents	411
	Summary	411
Chapter 22	Implementing Cookies	413
	Maintaining State	413
	Cookies and HTTP	413
	Cookies and JavaScript	417
	Cookie Functions	417
	Outliner	433
	Summary	443
Chapter 23	Images and Graphics	444
	Defining Images in HTML	444
	The Image Object	445
	Demonstration 1: Updating Digital Clock	454
	Demonstration 2: LED Sign	461
	Demonstration 3: Netris Deluxe	478
	Summary	512
Chapter 24	Frames	513
	What are Frames?	513
	Creating Frames	513
	Targeting Frames	516
	Nested Frames	517
	JavaScript and Frames	519
	Self	519
	Parent	520
	Top	521
	Frames	521
	An Example: The Color Center	523
	Frames, Events, and Event Handlers	537
	Targeting Multiple Frames	538
	Summary	539
Chapter 25	Windows	540
	What are Windows?	540
	Opening a Window with JavaScript	540
	Referencing Windows	544
	Window Names	544
	Remotes	545
	Closing a Window	549
	Scrolling a Window	550
	Windows, Events, and Event Handlers	550
	An Example: Accessing a Window's Objects	553
	Summary	567
Chapter 26	Evaluation and Compilation	568
	Evaluating a String	568
	Function References and Calls	570
	Compiling Code as a Function	571
	Summary	575
Chapter 27	General Software Detection	576
	Browser Detection	576
	Checking if Java is Enabled	581
	Summary	581
Chapter 28	Plug-ins	582
	Embedding a Plug-in Object in HTML	582
	Referencing Plug-ins in JavaScript	583
	Determining Installed Plug-ins with JavaScript	583
	Properties of the mime Types Object	584
	Properties of the plugins Object	586
	LiveAudio and LiveVideo	587
	Summary	592
Chapter 29	LiveConnect--Connecting JavaScript, Java, and Plug-ins	593
	What is LiveConnect?	593
	Enabling LiveConnect	593
	The Java Console	593
	Netscape Packages	594
	Java to JavaScript Communication	595
	JavaScript to Java Communication	599
	Summary	620
Chapter 30	JavaScript Extensions for Layers	621
	Introduction	621
	Defining a Layer	622
	The layer Object	627
	Demonstration: A Pictorial Album of U.S. Presidents	630
	Summary	633
Chapter 31	Style Sheets	634
	Introduction	634
	Content Layout	635
	Font Properties	635
	Text Properties	635
	Inheritance of Styles	635
	Creating Style Sheets and Assigning Styles	636
	Format Properties	638
	Summary	640
Chapter 32	Security Issues	641
	History	641
	URL to URL Access Security	641
	The Concept of Tainting	642
	Summary	645
Chapter 33	Debugging Scripts	646
	Types of Errors	646
	Error Messages	647
	Manual Debugging Techniques	650
	Getting It Right the First Time	652
	Testing Your Script	653
	Summary	654
Chapter 34	JavaScript and VRML	655
	Introduction	655
	Smaller File Sizes	656
	Summary	657
Chapter 35	JavaScript Tips and Tricks	658
	Transparent Frames	658
	Browser Detection	658
	Popup Windows	659
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