JavaScript: The Definitive Guide 7th Edition by David Flanagan, ISBN-13: 978-1491952023

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JavaScript: The Definitive Guide: Master the World’s Most-Used Programming Language 7th Edition by David Flanagan, ISBN-13: 978-1491952023

[PDF eBook eTextbook] – Available Instantly

• Publisher: ‎ O’Reilly Media; 7th edition (June 23, 2020)
• Language: ‎ English
• 704 pages
• ISBN-10: ‎ 1491952024
• ISBN-13: ‎ 978-1491952023

JavaScript is the programming language of the web and is used by more software developers today than any other programming language. For nearly 25 years this best seller has been the go-to guide for JavaScript programmers. The seventh edition is fully updated to cover the 2020 version of JavaScript, and new chapters cover classes, modules, iterators, generators, Promises, async/await, and metaprogramming. You’ll find illuminating and engaging example code throughout.

This book is for programmers who want to learn JavaScript and for web developers who want to take their understanding and mastery to the next level. It begins by explaining the JavaScript language itself, in detail, from the bottom up. It then builds on that foundation to cover the web platform and Node.js.

Topics include:

• Types, values, variables, expressions, operators, statements, objects, and arrays
• Functions, classes, modules, iterators, generators, Promises, and async/await
• JavaScript’s standard library: data structures, regular expressions, JSON, i18n, etc.
• The web platform: documents, components, graphics, networking, storage, and threads
• Node.js: buffers, files, streams, threads, child processes, web clients, and web servers
• Tools and language extensions that professional JavaScript developers rely on.

The overwhelming majority of websites use JavaScript, and all modern web browsers—on desktops, tablets, and phones—include JavaScript interpreters, making JavaScript the most-deployed programming language in history. Over the last decade, Node.js has enabled JavaScript programming outside of web browsers, and the dramatic success of Node means that JavaScript is now also the most-used programming language among software developers. Whether you’re starting from scratch or are already using JavaScript professionally, this book will help you master the language.

If you are already familiar with other programming languages, it may help you to know that JavaScript is a high-level, dynamic, interpreted programming language that is well-suited to object-oriented and functional programming styles. JavaScript’s variables are untyped. Its syntax is loosely based on Java, but the languages are otherwise unrelated.

JavaScript derives its first-class functions from Scheme and its prototype-based inheritance from the little-known language Self. But you do not need to know any of those languages, or be familiar with those terms, to use this book and learn JavaScript.

Table of Contents:

Preface

Conventions Used in This Book

Example Code

O’Reilly Online Learning

How to Contact Us

Acknowledgments

Introduction to JavaScript

1.1 Exploring JavaScript

1.2 Hello World

1.3 A Tour of JavaScript

1.4 Example: Character Frequency Histograms

1.5 Summary

Lexical Structure

2.1 The Text of a JavaScript Program

2.2 Comments

2.3 Literals

2.4 Identifiers and Reserved Words

2.4.1 Reserved Words

2.5 Unicode

2.5.1 Unicode Escape Sequences

2.5.2 Unicode Normalization

2.6 Optional Semicolons

2.7 Summary

Types, Values, and Variables

3.1 Overview and Definitions

3.2 Numbers

3.2.1 Integer Literals

3.2.2 Floating-Point Literals

3.2.3 Arithmetic in JavaScript

3.2.4 Binary Floating-Point and Rounding Errors

3.2.5 Arbitrary Precision Integers with BigInt

3.2.6 Dates and Times

3.3 Text

3.3.1 String Literals

3.3.2 Escape Sequences in String Literals

3.3.3 Working with Strings

3.3.4 Template Literals

3.3.5 Pattern Matching

3.4 Boolean Values

3.5 null and undefined

3.6 Symbols

3.7 The Global Object

3.8 Immutable Primitive Values and Mutable Object References

3.9 Type Conversions

3.9.1 Conversions and Equality

3.9.2 Explicit Conversions

3.9.3 Object to Primitive Conversions

3.10 Variable Declaration and Assignment

3.10.1 Declarations with let and const

3.10.2 Variable Declarations with var

3.10.3 Destructuring Assignment

3.11 Summary

Expressions and Operators

4.1 Primary Expressions

4.2 Object and Array Initializers

4.3 Function Definition Expressions

4.4 Property Access Expressions

4.4.1 Conditional Property Access

4.5 Invocation Expressions

4.5.1 Conditional Invocation

4.6 Object Creation Expressions

4.7 Operator Overview

4.7.1 Number of Operands

4.7.2 Operand and Result Type

4.7.3 Operator Side Effects

4.7.4 Operator Precedence

4.7.5 Operator Associativity

4.7.6 Order of Evaluation

4.8 Arithmetic Expressions

4.8.1 The + Operator

4.8.2 Unary Arithmetic Operators

4.8.3 Bitwise Operators

4.9 Relational Expressions

4.9.1 Equality and Inequality Operators

4.9.2 Comparison Operators

4.9.3 The in Operator

4.9.4 The instanceof Operator

4.10 Logical Expressions

4.10.1 Logical AND (&&)

4.10.2 Logical OR (||)

4.10.3 Logical NOT (!)

4.11 Assignment Expressions

4.11.1 Assignment with Operation

4.12 Evaluation Expressions

4.12.1 eval()

4.12.2 Global eval()

4.12.3 Strict eval()

4.13 Miscellaneous Operators

4.13.1 The Conditional Operator (?:)

4.13.2 First-Defined (??)

4.13.3 The typeof Operator

4.13.4 The delete Operator

4.13.5 The await Operator

4.13.6 The void Operator

4.13.7 The comma Operator (,)

4.14 Summary

Statements

5.1 Expression Statements

5.2 Compound and Empty Statements

5.3 Conditionals

5.3.1 if

5.3.2 else if

5.3.3 switch

5.4 Loops

5.4.1 while

5.4.2 do/while

5.4.3 for

5.4.4 for/of

5.4.5 for/in

5.5 Jumps

5.5.1 Labeled Statements

5.5.2 break

5.5.3 continue

5.5.4 return

5.5.5 yield

5.5.6 throw

5.5.7 try/catch/finally

5.6 Miscellaneous Statements

5.6.1 with

5.6.2 debugger

5.6.3 “use strict”

5.7 Declarations

5.7.1 const, let, and var

5.7.2 function

5.7.3 class

5.7.4 import and export

5.8 Summary of JavaScript Statements

Objects

6.1 Introduction to Objects

6.2 Creating Objects

6.2.1 Object Literals

6.2.2 Creating Objects with new

6.2.3 Prototypes

6.2.4 Object.create()

6.3 Querying and Setting Properties

6.3.1 Objects As Associative Arrays

6.3.2 Inheritance

6.3.3 Property Access Errors

6.4 Deleting Properties

6.5 Testing Properties

6.6 Enumerating Properties

6.6.1 Property Enumeration Order

6.7 Extending Objects

6.8 Serializing Objects

6.9 Object Methods

6.9.1 The toString() Method

6.9.2 The toLocaleString() Method

6.9.3 The valueOf() Method

6.9.4 The toJSON() Method

6.10 Extended Object Literal Syntax

6.10.1 Shorthand Properties

6.10.2 Computed Property Names

6.10.3 Symbols as Property Names

6.10.4 Spread Operator

6.10.5 Shorthand Methods

6.10.6 Property Getters and Setters

6.11 Summary

Arrays

7.1 Creating Arrays

7.1.1 Array Literals

7.1.2 The Spread Operator

7.1.3 The Array() Constructor

7.1.4 Array.of()

7.1.5 Array.from()

7.2 Reading and Writing Array Elements

7.3 Sparse Arrays

7.4 Array Length

7.5 Adding and Deleting Array Elements

7.6 Iterating Arrays

7.7 Multidimensional Arrays

7.8 Array Methods

7.8.1 Array Iterator Methods

7.8.2 Flattening arrays with flat() and flatMap()

7.8.3 Adding arrays with concat()

7.8.4 Stacks and Queues with push(), pop(), shift(), and unshift()

7.8.5 Subarrays with slice(), splice(), fill(), and copyWithin()

7.8.6 Array Searching and Sorting Methods

7.8.7 Array to String Conversions

7.8.8 Static Array Functions

7.9 Array-Like Objects

7.10 Strings as Arrays

7.11 Summary

Functions

8.1 Defining Functions

8.1.1 Function Declarations

8.1.2 Function Expressions

8.1.3 Arrow Functions

8.1.4 Nested Functions

8.2 Invoking Functions

8.2.1 Function Invocation

8.2.2 Method Invocation

8.2.3 Constructor Invocation

8.2.4 Indirect Invocation

8.2.5 Implicit Function Invocation

8.3 Function Arguments and Parameters

8.3.1 Optional Parameters and Defaults

8.3.2 Rest Parameters and Variable-Length Argument Lists

8.3.3 The Arguments Object

8.3.4 The Spread Operator for Function Calls

8.3.5 Destructuring Function Arguments into Parameters

8.3.6 Argument Types

8.4 Functions as Values

8.4.1 Defining Your Own Function Properties

8.5 Functions as Namespaces

8.6 Closures

8.7 Function Properties, Methods, and Constructor

8.7.1 The length Property

8.7.2 The name Property

8.7.3 The prototype Property

8.7.4 The call() and apply() Methods

8.7.5 The bind() Method

8.7.6 The toString() Method

8.7.7 The Function() Constructor

8.8 Functional Programming

8.8.1 Processing Arrays with Functions

8.8.2 Higher-Order Functions

8.8.3 Partial Application of Functions

8.8.4 Memoization

8.9 Summary

Classes

9.1 Classes and Prototypes

9.2 Classes and Constructors

9.2.1 Constructors, Class Identity, and instanceof

9.2.2 The constructor Property

9.3 Classes with the class Keyword

9.3.1 Static Methods

9.3.2 Getters, Setters, and other Method Forms

9.3.3 Public, Private, and Static Fields

9.3.4 Example: A Complex Number Class

9.4 Adding Methods to Existing Classes

9.5 Subclasses

9.5.1 Subclasses and Prototypes

9.5.2 Subclasses with extends and super

9.5.3 Delegation Instead of Inheritance

9.5.4 Class Hierarchies and Abstract Classes

9.6 Summary

Modules

10.1 Modules with Classes, Objects, and Closures

10.1.1 Automating Closure-Based Modularity

10.2 Modules in Node

10.2.1 Node Exports

10.2.2 Node Imports

10.2.3 Node-Style Modules on the Web

10.3 Modules in ES6

10.3.1 ES6 Exports

10.3.2 ES6 Imports

10.3.3 Imports and Exports with Renaming

10.3.4 Re-Exports

10.3.5 JavaScript Modules on the Web

10.3.6 Dynamic Imports with import()

10.3.7 import.meta.url

10.4 Summary

The JavaScript Standard Library

11.1 Sets and Maps

11.1.1 The Set Class

11.1.2 The Map Class

11.1.3 WeakMap and WeakSet

11.2 Typed Arrays and Binary Data

11.2.1 Typed Array Types

11.2.2 Creating Typed Arrays

11.2.3 Using Typed Arrays

11.2.4 Typed Array Methods and Properties

11.2.5 DataView and Endianness

11.3 Pattern Matching with Regular Expressions

11.3.1 Defining Regular Expressions

11.3.2 String Methods for Pattern Matching

11.3.3 The RegExp Class

11.4 Dates and Times

11.4.1 Timestamps

11.4.2 Date Arithmetic

11.4.3 Formatting and Parsing Date Strings

11.5 Error Classes

11.6 JSON Serialization and Parsing

11.6.1 JSON Customizations

11.7 The Internationalization API

11.7.1 Formatting Numbers

11.7.2 Formatting Dates and Times

11.7.3 Comparing Strings

11.8 The Console API

11.8.1 Formatted Output with Console

11.9 URL APIs

11.9.1 Legacy URL Functions

11.10 Timers

11.11 Summary

Iterators and Generators

12.1 How Iterators Work

12.2 Implementing Iterable Objects

12.2.1 “Closing” an Iterator: The Return Method

12.3 Generators

12.3.1 Generator Examples

12.3.2 yield* and Recursive Generators

12.4 Advanced Generator Features

12.4.1 The Return Value of a Generator Function

12.4.2 The Value of a yield Expression

12.4.3 The return() and throw() Methods of a Generator

12.4.4 A Final Note About Generators

12.5 Summary

Asynchronous JavaScript

13.1 Asynchronous Programming with Callbacks

13.1.1 Timers

13.1.2 Events

13.1.3 Network Events

13.1.4 Callbacks and Events in Node

13.2 Promises

13.2.1 Using Promises

13.2.2 Chaining Promises

13.2.3 Resolving Promises

13.2.4 More on Promises and Errors

13.2.5 Promises in Parallel

13.2.6 Making Promises

13.2.7 Promises in Sequence

13.3 async and await

13.3.1 await Expressions

13.3.2 async Functions

13.3.3 Awaiting Multiple Promises

13.3.4 Implementation Details

13.4 Asynchronous Iteration

13.4.1 The for/await Loop

13.4.2 Asynchronous Iterators

13.4.3 Asynchronous Generators

13.4.4 Implementing Asynchronous Iterators

13.5 Summary

Metaprogramming

14.1 Property Attributes

14.2 Object Extensibility

14.3 The prototype Attribute

14.4 Well-Known Symbols

14.4.1 Symbol.iterator and Symbol.asyncIterator

14.4.2 Symbol.hasInstance

14.4.3 Symbol.toStringTag

14.4.4 Symbol.species

14.4.5 Symbol.isConcatSpreadable

14.4.6 Pattern-Matching Symbols

14.4.7 Symbol.toPrimitive

14.4.8 Symbol.unscopables

14.5 Template Tags

14.6 The Reflect API

14.7 Proxy Objects

14.7.1 Proxy Invariants

14.8 Summary

JavaScript in Web Browsers

15.1 Web Programming Basics

15.1.1 JavaScript in HTML <script> Tags

15.1.2 The Document Object Model

15.1.3 The Global Object in Web Browsers

15.1.4 Scripts Share a Namespace

15.1.5 Execution of JavaScript Programs

15.1.6 Program Input and Output

15.1.7 Program Errors

15.1.8 The Web Security Model

15.2 Events

15.2.1 Event Categories

15.2.2 Registering Event Handlers

15.2.3 Event Handler Invocation

15.2.4 Event Propagation

15.2.5 Event Cancellation

15.2.6 Dispatching Custom Events

15.3 Scripting Documents

15.3.1 Selecting Document Elements

15.3.2 Document Structure and Traversal

15.3.3 Attributes

15.3.4 Element Content

15.3.5 Creating, Inserting, and Deleting Nodes

15.3.6 Example: Generating a Table of Contents

15.4 Scripting CSS

15.4.1 CSS Classes

15.4.2 Inline Styles

15.4.3 Computed Styles

15.4.4 Scripting Stylesheets

15.4.5 CSS Animations and Events

15.5 Document Geometry and Scrolling

15.5.1 Document Coordinates and Viewport Coordinates

15.5.2 Querying the Geometry of an Element

15.5.3 Determining the Element at a Point

15.5.4 Scrolling

15.5.5 Viewport Size, Content Size, and Scroll Position

15.6 Web Components

15.6.1 Using Web Components

15.6.2 HTML Templates

15.6.3 Custom Elements

15.6.4 Shadow DOM

15.6.5 Example: a <search-box> Web Component

15.7 SVG: Scalable Vector Graphics

15.7.1 SVG in HTML

15.7.2 Scripting SVG

15.7.3 Creating SVG Images with JavaScript

15.8 Graphics in a <canvas>

15.8.1 Paths and Polygons

15.8.2 Canvas Dimensions and Coordinates

15.8.3 Graphics Attributes

15.8.4 Canvas Drawing Operations

15.8.5 Coordinate System Transforms

15.8.6 Clipping

15.8.7 Pixel Manipulation

15.9 Audio APIs

15.9.1 The Audio() Constructor

15.9.2 The WebAudio API

15.10 Location, Navigation, and History

15.10.1 Loading New Documents

15.10.2 Browsing History

15.10.3 History Management with hashchange Events

15.10.4 History Management with pushState()

15.11 Networking

15.11.1 fetch()

15.11.2 Server-Sent Events

15.11.3 WebSockets

15.12 Storage

15.12.1 localStorage and sessionStorage

15.12.2 Cookies

15.12.3 IndexedDB

15.13 Worker Threads and Messaging

15.13.1 Worker Objects

15.13.2 The Global Object in Workers

15.13.3 Importing Code into a Worker

15.13.4 Worker Execution Model

15.13.5 postMessage(), MessagePorts, and MessageChannels

15.13.6 Cross-Origin Messaging with postMessage()

15.14 Example: The Mandelbrot Set

15.15 Summary and Suggestions for Further Reading

15.15.1 HTML and CSS

15.15.2 Performance

15.15.3 Security

15.15.4 WebAssembly

15.15.5 More Document and Window Features

15.15.6 Events

15.15.7 Progressive Web Apps and Service Workers

15.15.8 Mobile Device APIs

15.15.9 Binary APIs

15.15.10 Media APIs

15.15.11 Cryptography and Related APIs

Server-Side JavaScript with Node

16.1 Node Programming Basics

16.1.1 Console Output

16.1.2 Command-Line Arguments and Environment Variables

16.1.3 Program Life Cycle

16.1.4 Node Modules

16.1.5 The Node Package Manager

16.2 Node Is Asynchronous by Default

16.3 Buffers

16.4 Events and EventEmitter

16.5 Streams

16.5.1 Pipes

16.5.2 Asynchronous Iteration

16.5.3 Writing to Streams and Handling Backpressure

16.5.4 Reading Streams with Events

16.6 Process, CPU, and Operating System Details

16.7 Working with Files

16.7.1 Paths, File Descriptors, and FileHandles

16.7.2 Reading Files

16.7.3 Writing Files

16.7.4 File Operations

16.7.5 File Metadata

16.7.6 Working with Directories

16.8 HTTP Clients and Servers

16.9 Non-HTTP Network Servers and Clients

16.10 Working with Child Processes

16.10.1 execSync() and execFileSync()

16.10.2 exec() and execFile()

16.10.3 spawn()

16.10.4 fork()

16.11 Worker Threads

16.11.1 Creating Workers and Passing Messages

16.11.2 The Worker Execution Environment

16.11.3 Communication Channels and MessagePorts

16.11.4 Transferring MessagePorts and Typed Arrays

16.11.5 Sharing Typed Arrays Between Threads

16.12 Summary

JavaScript Tools and Extensions

17.1 Linting with ESLint

17.2 JavaScript Formatting with Prettier

17.3 Unit Testing with Jest

17.4 Package Management with npm

17.5 Code Bundling

17.6 Transpilation with Babel

17.7 JSX: Markup Expressions in JavaScript

17.8 Type Checking with Flow

17.8.1 Installing and Running Flow

17.8.2 Using Type Annotations

17.8.3 Class Types

17.8.4 Object Types

17.8.5 Type Aliases

17.8.6 Array Types

17.8.7 Other Parameterized Types

17.8.8 Read-Only Types

17.8.9 Function Types

17.8.10 Union Types

17.8.11 Enumerated Types and Discriminated Unions

17.9 Summary

Index

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