JavaScript by Powell, Thomas -- Read -- Imperial Library of Trantor

Index

Cover Page JavaScript: The Complete Reference, Third Edition Copyright Page Contents at a Glance Contents Acknowledgments Introduction Part I Introduction

Chapter 1 Introduction to JavaScript

Hello JavaScript World

Hello Errors

Adding JavaScript to XHTML Documents

The <script> Element Event Handlers Linked Scripts JavaScript Pseudo-URL

JavaScript Usage Considerations

Script Masking The <noscript> Element Language Versions Cross-Browser Concerns Living with Other Scripts

JavaScript: A Real Programming Language

History of JavaScript Common Uses of JavaScript The Rise of JavaScript Libraries The Future of JavaScript

Summary

Chapter 2 Overview of JavaScript Core Language Features

Basic Definitions Execution Order Case Sensitivity

HTML and Case Sensitivity

Whitespace Statements

Semicolons Blocks

Variables Basic Data Types

Weak Typing Type Conversion

Composite Types

Objects Arrays Functions as Data Types Regular Expression Literals and Object

Expressions

Arithmetic Operators Assignment Operators Logical Operators Conditional Operator Type Operators Comma Operator Relational Operators Operator Precedence and Associativity

Flow Control Loops

Loop Control

Input and Output in JavaScript Functions Scoping Rules Regular Expressions Exceptions Comments ECMAScript 5 Changes

“use strict”; Native JSON Support Function.prototype.bind( ) ISO Dates Native Array Additions String.prototype.trim( ) Object/Property Additions Emerging Features

Summary

Part II Core Language

Chapter 3 Data Types and Variables

Key Concepts

Weak Typing

JavaScript’s Primitive Types

Numbers Strings Booleans Undefined and Null

Composite Types

Objects Arrays Functions The typeof Operator

Type Conversion

Conversion Rules for Primitive Types Promotion of Primitive Data to Objects Explicit Type Conversion

Variables

Identifiers Variable Declaration Implicit Variable Declaration Variable Scope

Constants Summary

Chapter 4 Operators, Expressions, and Statements

Statement Basics

Whitespace Termination: Semicolons and Returns Blocks

Operators

Assignment Operator Arithmetic Operators Bitwise Operators Bitwise Shift Operators Combining Arithmetic and Bitwise Operations with Assignment Increment and Decrement Comparison Operators Logical Operators ? Operator Comma Operator void Operator typeof Object Operators Operator Precedence and Associativity

Core JavaScript Statements

if Statements switch while Loops do-while Loops for Loops Loop Control with continue and break Object-Related Statements Other Statements

Summary

Chapter 5 Functions

Function Basics

Parameter Passing Basics Return Statements Parameter Passing: In and Out

Global and Local Variables

Variable Naming for Scope Inner Functions

Closures Functions as Objects

Function Literals Static Variables Advanced Parameter Passing Advanced Function Properties and Methods

Recursive Functions Summary

Chapter 6 Objects

Objects in JavaScript Object Fundamentals

Object Creation Object Destruction and Garbage Collection Properties Objects Are Reference Types Common Properties and Methods

Object-Oriented JavaScript

Prototype-Based Objects Constructors Prototypes Class Properties Inheritance via the Prototype Chain Overriding Default Methods and Properties

ECMAScript 5 Object-Related Changes JavaScript’s Object-Oriented Reality Summary

Chapter 7 Array, Date, Math, and Type-Related Objects

Array

Accessing Array Elements Adding and Changing Array Elements Removing Array Elements The length Property Arrays as Stacks and Queues Manipulating Arrays Multidimensional Arrays Extending Arrays with Prototypes ECMAScript 5 Array Additions

Boolean Date

Creating Dates Manipulating Dates ECMAScript 5 Date Additions

Global Math

Random Numbers

Number String

Examining Strings Manipulating Strings Marking Up Strings as Traditional HTML ECMAScript 5 String Changes

Summary

Chapter 8 Regular Expressions

The Need for Regular Expressions Introduction to JavaScript Regular Expressions

Creating Patterns

RegExp Object

test( ) Subexpressions compile( ) exec( ) RegExp Properties

String Methods for Regular Expressions

search( ) split( ) replace( ) match( )

Advanced Regular Expressions

Multiline Matching Noncapturing Parentheses Lookahead Greedy Matching

Limitations of Regular Expressions Summary

Chapter 9 JavaScript Object Models

Object Model Overview The Initial JavaScript Object Model The Document Object

Accessing Document Elements by Position Accessing Document Elements by Name

Simple Event Handling

Setting Event Handlers Inline Direct Assignment of Event Handlers Setting Event Listeners Invoking Event Handlers

JavaScript + DOM + Selection + Events = Program The Evolution of the JavaScript Object Model

The Early Evolution of Browser Object Models DHTML-Oriented Object Models Internet Explorer 4’s DHTML Object Model Beyond the DHTML Object Models

Summary

Chapter 10 The Standard Document Object Model

DOM Flavors

What Browsers Say Is Implemented

Document Trees Basic Element Access: getElementById( )

Tree Traversal Basics

Other Element Access Methods

getElementsByName( ) Common JavaScript Collections getElementsByTagName( ) Common Tree Traversal Starting Points document.getElementsByClassName( ) querySelector( ) and querySelectorAll( )

Creating Nodes Appending and Inserting Nodes

Text Nodes and normalize( ) Method insertBefore( ) method Other Insertion Methods

Dynamic Markup Insertion Realities

innerHTML outerHTML

innerText and outerText

insertAdjacentHTML( ) and insertAdjacentText( ) document.write( ) and document.writeln( )

Copying Nodes Deleting and Replacing Nodes

Modifying Text Nodes

Manipulating Attributes

Attribute Nodes

Other Node Methods Namespaces The DOM and HTML Elements

HTML Element Mappings

DOM Table Manipulation The DOM and Css

Inline Style Manipulation Dynamic Style Using Classes and Collections Computed Style Accessing Complex Style Rules

DOM Traversal API DOM Range Selections Continued DOM Evolution Summary

Chapter 11 Event Handling

Overview of Events and Event Handling The Traditional Event Model

Event Binding with HTML Attributes Binding Event Handler Attributes with JavaScript Event Handler Scope Details Return Values Firing Events Manually

Overview of Modern Event Models Internet Explorer’s Proprietary Model

attachEvent( ) and detachEvent( ) Event Object Event Bubbling Simulating Event Routing Event Creation

DOM Event Model

Traditional Binding Changes addEventListener( ) and removeEventListener( ) Event Object Preventing Default Actions Controlling Event Propagation Event Creation

Event Types

Mouse Events Ui Events Focus Events Keyboard Events Text Events Mutation Events Nonstandard Events Custom Events Browser State and Loading Events

Event Model Issues Summary

Part III Applied JavaScript

Chapter 12 Windows, Frames, and Overlays

Introduction to the Window Object Dialogs

alert( ) confirm( ) prompt( )

Emerging and Proprietary Dialog Methods

showModalDialog( ) showModelessDialog( ) createPopup( )

Opening and Closing Generic Windows

Window Features

Detecting and Controlling Window Chrome Practicalities of Spawned Windows

Building Window Contents Overlays Instead of Windows

Controlling Windows

focus( ) and blur( ) stop( ) print( ) find( ) Moving Windows Resizing Windows Scrolling Windows Accessing and Setting a Window’s Location Hash Values in URLs

Manipulating a Window’s History

pushstate( ) and replacestate( ) Trying to Control the Window’s Status Bar

Setting Window Timeouts and Intervals Window Events Interwindow Communication Basics

Interwindow Message Passing with postMessage( )

Frames: A Special Case of Windows

Inline Frames Applied Frames

Summary

Chapter 13 Form Handling

The Need for JavaScript Form Checking Form Basics

Accessing Forms and Fields

Form Fields

Common Input Element Properties Buttons Traditional Text Fields HTML5 Semantic Text Fields Text Areas Checkboxes and Radio Buttons Select Menus Date Pickers Color Sliders File Upload Fields Hidden Fields Other Form Features: Label, Fieldset, Output, and Legend

Form Usability and JavaScript

First Field Focus Labels and Field Selection Advisory and Status Messages Data Lists Disabled and Read-Only Fields

Form Validation

Abstracting Form Validation Error Messages onchange Handlers Keyboard Masking

HTML5 Validation Improvements

Validation Attributes Validation Properties and Methods novalidate Attribute

Miscellaneous Html5 Form Changes Internationalization Summary

Chapter 14 User Interface Elements

Adding JavaScript

Exploring Progressive Enhancement Graceful Degradation Approaches

HTML5 Support for Rich Interaction

Menus and Context Menus Drag-and-Drop Functionality Content Editing Revealing Content on Demand User Feedback

Summary

Chapter 15 Ajax and Remote JavaScript

Ajax Defined Hello Ajax World XML HttpRequest Object XHR Instantiation and Cross-Browser Concerns

ActiveX XHR Fallback Details A Cross-Browser XHR Wrapper

XHR Request Basics Synchronous Requests Asynchronous Requests Sending Data via GET Sending Data via Post Using Other HTTP Methods Setting Request Headers Response Basics

readyState Explored status and statusText responseText responseXML response and responseType JSON Script Responses Response Headers

Controlling Requests Authentication with XHRs Propriety and Emerging XHR Features

Managing MIME Types Multipart Responses onload, onloadstart, and onloadend onprogress and Partial Responses onerror

Form Serialization

File Uploads with iframes

Cross-Domain Ajax Requests

Internet Explorer’s XDRs

Non-XHR Communication Methods

Image Tag Script Tag

Comet and Sockets

Polling: Fast or Long The Long Slow Load WebSockets

Ajax Implications and Challenges Summary

Chapter 16 Browser Management

Browser Detection Basics The Navigator Object What to Detect

Technology Detection Visual Detection: Screen Object User Characteristics

Network State and Performance

Simple Page Load Metrics window.performance.timing

Browser Control

Simulating Browser Button Presses

State Management

Cookies in JavaScript Using Cookies for User State Management Cookie Limitations Storage IndexedDB AppCache

Script Execution

Web Workers

Summary

Chapter 17 Media Management

Image Handling

Applied Images

DHTML, DOMEffects, and Animation Client-Side Bitmap Graphics with <canvas>

Drawing and Styling Lines and Shapes Drawing Arcs and Curves Scaling, Rotating, and Translating Drawings Using Bitmaps in Drawings Text Support for <canvas> Compositing Saving State <canvas> Considerations

Client-Side Vector Graphics with SVG

Including SVG Drawing with SVG SVG Interaction and Animation

HTML5 Media Handling

<video> <audio> Media Events

Plug-Ins

Embedding Content for Plug-Ins MIME Types Detecting Specific Plug-Ins Interacting with Plug-Ins

ActiveX

Including ActiveX Controls Interacting with ActiveX Controls

Java Applets

Including Applets Java Detection Accessing Applets in JavaScript Accessing JavaScript with Applets

The Uncertain Future Summary

Chapter 18 Trends and Practices

Writing Quality JavaScript

Coding Style Comments and Documentation Understanding Errors Debugging Defensive Programming Utilizing Frameworks and Libraries

Security

JavaScript Protection

JavaScript’s Security Policy

Same-Origin Policy Trusted External Scripts Cross-Site Scripting Cross-Site Request Forgery (CSRF)

Performance

Performance Measurements and Tools Page-Load Performance Runtime Performance

Trends

JavaScript Everywhere “Fixing” and Hiding JavaScript Accepting JavaScript

Summary

Appendix JavaScript Reserved Words

Reserved Quirks

Index

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