学习JavaScript（第2版 影印版）

Preface

1. Hello JavaScript!

　Hello World!

　Hello World! Once Again

　　The script Tag

　　JavaScript Versus ECMAScript Versus JScript

　　Defining Functions in JavaScript

　　Event Handlers

　　The document Browser Object

　　The property Operator

　　The var Keyword and Scope

　　Statements

　　Comments

　　What You Didn't See: HTML Comments and CDATA Sections.

　JavaScript Files

　Accessibility and JavaScript Best Practices

　　Accessibility Guidelines

　　noscript

2. JavaScript Data Types and Variables

　Identifying Variables

　　Naming Guidelines

　Primitive Types

　The String Data Type

　　String Escape Sequences

　　String Encoding

　　Converting to Strings

　The Boolean Data Type

　The Number Data Type

　The null and undefined Variables

　Constants: Named but Not Variables

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

3. Operat0rs and Statements

The Format of a JavaScript Statement

The Assignment Statement

　　The Arithmetic Operators

　 The Unary Operators

　 Operator Precedence

　 A Handy Shortcut: Assignment with Operation

　 The Bitwise Operators

Conditional Statements and Program Flow

　 The if...else Conditional Statement

　 The switch Conditional Statement

The Conditional Operators

　 The Equality and Identity (String Equality) Operators

　 Other Relational Operators

　 The One and Only JavaScript Ternary Operator

The Logical Operators

Advanced Statements: The Loops

　 The while Loop

　 The do...while Loop

　 The for Loops

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

4. The JavaScript Objects

Primitive Data Types As Objects

Boolean, Number, and String

　 The Boolean Object

　 The Number Object, Static Properties, and Instance Methods

　　The String Object

Regular Expressions and RegExp

　 The RegExp Methods: test and exec

　 Working with Regular Expressions

The Date Object

The Math Object

　 The Math Properties

　 The Math Methods

JavaScript Arrays

　 FIFO Queues

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

5. Functions

Declarative Functions

　 Function Naming Conventions and Size

　　Function Returns and Arguments

Anonymous Functions

Function Literals

　 Functions and Recursion

　 Nested Functions, Function Closure, and Memory Leaks

　 Callback Functions

Function Type Summary

Function Scope

Function As Object

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

6. Troubleshooting, Debugging, and Cross-Browser Issues

Simple Ways to Debug

Development and Debugging Tools by Browser

　 Firefox and Firebug

　 Using console.log

　 Firefox, the Web Developer Toolkit, and NoScript

　 Opera and Dragonfly

　 Safari/WebKit and the Web Inspector

　 Internet Explorer

Dealing with Cross-Browser Differences

　 Object Detection

　 Where Object Detection Fails

　 DOCTYPE, X-UA-Compatible, and Quirks Mode

　 Breaking Backward Compatibility: The IE8 http-equiv Meta Tag

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

7. Catching Events

The Events

Level 0 Event Handling

　　The Event Object

　　Event Bubbling

　　Event Handlers and this

The DOM Level 2 Event Model

　　Generating Events

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

8. Forms, Form Events, and Validation

Attaching Events to Forms: Different Approaches

　　Cross-Browser Event Handling

　　Canceling an Event

Selection

　　Dynamically Modifying the Selection

　　Selection and Auto-Selection

Radio Buttons and Checkboxes

The text, textarea, password, and hidden Input Elements

　　Text Validation

Input Fields and Regular Expression Validation

Forms, the Sandbox, and XSS

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

9. Browser As Puzzle Box

The Structure of the Browser at a Glance

The window Object

Creating and Controlling Windows

　　The Dialogs: alert, confirm, and prompt

　 Creating Custom Windows

　 Modifying a Window

Frames

　 The location Object

　 Remote Scripting with the iframe

Adding and Controlling Timers

The history, screen, and navigator Objects

　 The history Object

　 The screen Object

　 The navigator Object

　 The history, screen, and navigator Properties in Action

The Document Object

　 Links

　 Images

innerHTML

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

10. Cookies and Other Client-Side Storage Techniques

The JavaScript Sandbox and Cookie Security

　 The Same-Origin Security Policy

　 Using document.domain

All About Cookies

　　Storing and Reading Cookies

Flash Shared Objects, Google Gears, and HTML5 DOM Storage

Test Your Knowledge: Quiz

Test Your Knowledge: Answers

11. The DOM, or Web Page As Tree

A Tale of Two Interfaces

The DOM HTML API

　　The DOM HTML Objects and Their Properties

　　DOM (HTML) Collections

Understanding the DOM: The Core API

　　The DOM Tree

　　Node Properties and Methods

　　The DOM Core Document Object

　Element and Access in Context

　Modifying the Tree

　Test Your Knowledge: Quiz

　Test Your Knowledge: Answers

12. Dynamic Pages

　JavaScript, CSS, and the DOM

　　The Style Property/Attributes

　Fonts and Text

　　Font Style Properties

　　Text Properties

　Position and Movement

　　Dynamic Positioning

　　Drag-and-Drop

　Size and Clipping

　　Overflow and Dynamic Content

　　The Clipping Rectangle

　Display, Visibility, and Opacity

　　The Right Tool for the Right Effect

　　Just-in-Time Information

　Revisiting the DOM: Collapsing Forms, Query Selectors, and Class Names

　Test Your Knowledge: Quiz

　Test Your Knowledge: Answers

13. Creating Custom lavaScript Objects

　The JavaScript Object and Prototyping

　　Prototyping

　Creating Your Own Custom JavaScript Objects

　　Enter the Function

　 Public and Private Properties and Where this Enters the Picture

　 Getters and Setters

Object Encapsulation

Chaining Constructors and JavaScript Inheritance

One-Off Objects

　Object Libraries: Packaging Your Objects for Reuse

Advanced Error Handling Techniques (try, throw, catch)

Test Your Knowledge: Quiz

　Test Your Knowledge: Answers

14. Moving Outside the Page with Ajax

　How Ajax Works

　Hello Ajax World!

　The XMLHttpRequest Object and Preparing to Send the Request

　　Object, Object, Who Has the Object?

　　The XMLHttpRequest Methods

　Processing the Web Request Return

　　Checking the readyState and status of an Ajax Request

　　Processing the Web Request Result

　Ajax: It's Not Only Code

　　The Dynamic Nature of Ajax

　　Ajax Accessibility and Degrading Gracefully

　　Security and Workarounds

　JavaScript and Ajax Libraries

　Test Your Knowledge: Quiz

　Test Your Knowledge: Answers

15. Ajax Data: XML oriSON?

　XML-Formatted Ajax Results

　　The Data's MIME Type

　　Generating the XML on the Server

　　Processing the XML on the Client

　JavaScript Object Notation

　　A Simple JSON Application

　　The JSON Object

　Test Your Knowledge: Quiz

　Test Your Knowledge: Answers

Index