How to Do Everything with JavaScript

By: Scott Duffy

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Paperback | 17 March 2003 | Edition Number 1

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448 Pages

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This friendly, solutions-oriented guide is filled with step-by-step examples that illustrate how to write basic to advanced JavaScript applications, as well as modify existing scripts to suit individual needs. Each chapter begins with the specific how-to topics that will be covered. Within the chapter, each topic is accompanied by a solid, easy-to-follow walkthrough of the process.

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Acknowledgments	p. xv
Introduction	p. xvii
Learn JavaScript Basics
Prepare to Program in JavaScript	p. 3
Learn the History of JavaScript	p. 4
The Origin of JavaScript	p. 5
JavaScript Makes Its Way into Internet Explorer	p. 5
JavaScript Becomes an Official Standard	p. 5
Where JavaScript Is Today	p. 6
Choose a Development Environment	p. 7
Develop JavaScript-Enabled Web Pages	p. 7
Create Server-Based Web Applications	p. 8
Use JavaScript in a DOS or Windows Environment	p. 9
JavaScript Development Tools	p. 9
Learn What JavaScript Can and Cannot Do	p. 13
Use JavaScript as a Client-Side Language	p. 14
Use JavaScript as a Server-Side Language	p. 14
Decide Which Version of JavaScript to Use	p. 15
Test JavaScript Programs Using HTML	p. 16
Create a JavaScript Template	p. 16
Understand the JavaScript Template	p. 18
Communicate with the User	p. 19
Display an Alert Message	p. 20
Write Text to the Browser Window	p. 21
Learn More about Topics Discussed in this Chapter	p. 22
Learn JavaScript Fundamentals	p. 25
Understand Basic Terminology	p. 26
Store Data in Variables	p. 26
Define Variables	p. 27
Define Constants	p. 28
Understand Program Flow	p. 29
Control Program Flow with Statements	p. 30
Execute Code Conditionally	p. 30
Repeat Statements Using Loops	p. 34
Comment Your Code	p. 43
Set a Default Object	p. 44
Handle Errors	p. 46
Understand the Basics of Expressions	p. 49
Use Operators to Create Complex Expressions	p. 50
Organize Your Code into Functions	p. 51
Define Functions	p. 52
Accept Parameters	p. 54
Understand Variable Scope	p. 56
Return Values	p. 58
Use the Improvements in JavaScript 2.0 to Create More Powerful Functions	p. 59
Use Named Optional Parameters	p. 60
Accept Any Number of Parameters	p. 61
Use Built-in JavaScript Classes	p. 63
Learn about Objects in JavaScript	p. 64
Write Unstructured Programs	p. 65
Organize Code into Procedures	p. 65
Separate a Program into Modules	p. 66
Use the Object-Oriented Approach	p. 66
Turn Properties and Functions into a Class	p. 68
JavaScript's Built-in Classes and Data Types	p. 69
Instantiate an Object with the new Operator	p. 72
Access an Object with the Operator	p. 73
Access an Object with the [] Operator	p. 73
Create a String Object in JavaScript	p. 73
Create a String Object Using a String Literal	p. 74
Create a String Object Using the String Data Type	p. 76
Use the String Object's Built-in Functionality	p. 76
Perform Mathematical Functions	p. 78
Apply JavaScript's Date-Handling Functions	p. 79
Convert Strings into Numbers	p. 82
Use the parseInt and parseFloat Functions	p. 82
Prepare Text Before Sending to Web Server	p. 84
Use the escape and unescape Functions	p. 85
Decide When to Use Regular Expressions	p. 86
Understand the Basics of Regular Expressions	p. 87
Create Patterns with a RegExp Object	p. 89
Understand JavaScript 2.0's Powerful New Data Types	p. 91
Use the Boolean, Integer, and Number Data Types	p. 91
Use the char Data Type	p. 91
Use the Object Data Type	p. 92
Understand Special Data Types	p. 92
Organize Data into Arrays	p. 95
Create an Array Object	p. 97
Create an Empty Array	p. 97
Specify an Initial Array Length	p. 99
Create and Initialize an Array in One Line of Code	p. 100
Use Array Literals	p. 100
Call the Properties and Methods of the Array Object	p. 101
Set and Retrieve Values in an Array	p. 104
Use Multidimensional Arrays	p. 107
Use JavaScript 2.0's Enhanced Arrays	p. 111
The StaticArray Class	p. 112
The DynamicArray Class	p. 114
The ConstArray Class	p. 114
Create Your Own JavaScript Classes	p. 117
Learn about Classes in JavaScript	p. 118
Create Objects in JavaScript 1.x	p. 118
Call a Constructor Function	p. 119
Use an Object Literal	p. 122
Extend an Existing Class	p. 123
Extend an Existing Object	p. 125
Create Objects in JavaScript 2.0	p. 126
Define Your Own Classes	p. 127
Organize Classes Using Inheritance	p. 130
Choose Between Static and Instance Members	p. 135
Make Class Members Public or Private	p. 136
Build JavaScript-Enabled Web Sites
Embed JavaScript in a Web Page	p. 141
Understand Basic HTML Structure	p. 142
Build an HTML Document	p. 145
Indicate the Document Type with [left angle bracket]!DOCTYPE[right angle bracket]	p. 146
Add a Title and Define Document Keywords	p. 147
Format Text with HTML Elements	p. 148
Format Text with Style Sheets	p. 150
Use [left angle bracket]script[right angle bracket] to Add JavaScript to a Web Page	p. 153
Use [left angle bracket]noscript[right angle bracket] for Browsers That Don't Support Scripting	p. 154
Load an External JavaScript File	p. 157
Call JavaScript Using Hyperlinks	p. 158
Learn More about the Topics in this Chapter	p. 159
Create Scripts That Work in Every Browser	p. 161
Understand Browser Differences	p. 162
What Kind of Errors Can Occur?	p. 163
Detect What Type of Browser the User Is Running	p. 164
Query the Document Model	p. 169
Stick to Web Standards	p. 170
Write Cross-Browser Code	p. 171
Manipulate Web Forms	p. 179
Understand HTML Forms	p. 180
Request User Input Using an HTML Form	p. 181
Process Form Input with Client-Side JavaScript	p. 182
Process Form Input on a Web Server	p. 183
Insert an HTML Form into a Web Page	p. 184
Retrieve and Set Form Control Values in JavaScript	p. 200
Access Form Values Using the forms Array	p. 200
Access Form Values Using the elements Array	p. 202
Access Form Values Using getElementById()	p. 204
Access Form Values Using getElementsByName()	p. 204
Access Form Values Using getElementsByTagName()	p. 205
Handle Browser Events	p. 207
Write JavaScript Event Handlers	p. 208
Handle User Interface Events	p. 209
Handle Mouse Events	p. 211
Handle Key Events	p. 212
Handle HTML Events	p. 215
Handle Events Using the Event Property	p. 218
Trigger Events in JavaScript	p. 219
Call the Method Associated with an Event	p. 219
Use the fireEvent Method	p. 220
Overcome Browser Incompatibility	p. 220
Communicate Between Browser Frames	p. 223
Learn the Basics of HTML Frames	p. 224
Create a Frameset in HTML	p. 225
Define and Name Frames in a Frameset	p. 233
Call JavaScript Functions from Other Frames	p. 235
Access Another Frame Using JavaScript	p. 236
Call a JavaScript Function Located in Another Frame	p. 237
Handle Synchronization Between Frames	p. 239
Interact with the Web Browser	p. 243
Learn the Basics of the Document Object Model	p. 245
Manipulate the Contents of a Web Page	p. 248
Dynamically Modify the Contents of a Web Page	p. 249
Change the Items in a Drop-Down List Box	p. 251
Examine the Entire Browser Window	p. 252
Retrieve Properties of the Web Browser Software	p. 254
Examine the Operating System's Display Settings	p. 256
Access the Web Browser History List	p. 257
Send the Browser to a New Location	p. 258
Perform Simple Animation	p. 259
Learn the Basics of Cascading Style Sheets	p. 260
Assign Style to Web Pages Using HTML Elements	p. 261
Assign Style to Web Pages Using Style Sheets	p. 264
Use Basic Style Attributes	p. 268
Position Elements on a Web Page	p. 268
Modify Styles Using JavaScript	p. 270
Understand Cross-Platform Issues	p. 272
Perform Basic Animation Using JavaScript	p. 274
Dynamically Load Images	p. 274
Make Content Move Around the Screen	p. 276
Take JavaScript to the Next Level
Debug JavaScript Programs	p. 281
Understand the Possible Causes of Errors	p. 282
Find the Source of an Error Message	p. 284
Interpret Error Messages	p. 285
Use a JavaScript Validator	p. 287
Add Debugging Code to Your Programs	p. 287
Use the JavaScript Console	p. 290
Use a JavaScript Debugger	p. 291
Make Your Program Errorproof	p. 295
Learn the Basics of Exceptions	p. 296
Catch Exceptions Using the try and catch Statements	p. 297
Understand Exception Bubbling	p. 299
Use the IE Error Object	p. 301
Use Netscape-Only catch Clauses	p. 302
Use Nonstandard finally Clauses	p. 302
Create Exceptions Using the throw Statement	p. 304
Design Programs That Are Easy to Debug from the Start	p. 306
Avoid Unstructured Programming	p. 307
Break Code into Manageable Chunks	p. 307
Reuse Code Using Classes and Objects	p. 308
Test Your JavaScript Code Thoroughly	p. 309
Create a Testing Harness	p. 309
Force Errors to Test Error-Handling Code	p. 311
Try Your Program in Many Different Environments	p. 312
Use JavaScript to Manage Browser Plug-Ins	p. 313
Insert Scriptable Objects into HTML Web Pages	p. 315
Include Sun Java Applets	p. 315
Connect to Java Applets Using JavaScript	p. 319
Embed Movies and Music in Web Pages	p. 321
Connect to Music and Media Objects Using JavaScript	p. 322
Use the Microsoft Calendar Control in Your Web Pages	p. 324
HTML 4.01 Tags	p. 327
JavaScript Quick Reference	p. 331
Index	p. 335
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How to Do Everything with JavaScript

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