Eloquent JavaScript 2e - 手册 - 文江博客

Eloquent JavaScript 2e

Eloquent JavaScript 2e

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目录

Introduction
- On programming
- Why language matters
- What is JavaScript?
- Code, and what to do with it
- Overview of this book
- Typographic conventions
Chapter 1 Values, Types, and Operators
- Values
- Numbers
- Strings
- Unary operators
- Boolean values
- Undefined values
- Automatic type conversion
- Summary
Chapter 2 Program Structure
- Expressions and statements
- Variables
- Keywords and reserved words
- The environment
- Functions
- The console.log function
- Return values
- prompt and confirm
- Control flow
- Conditional execution
- while and do loops
- Indenting Code
- for loops
- Breaking Out of a Loop
- Updating variables succinctly
- Dispatching on a value with switch
- Capitalization
- Comments
- Summary
- Exercises
Chapter 3 Functions
- Defining a function
- Parameters and scopes
- Nested scope
- Functions as values
- Declaration notation
- The call stack
- Optional Arguments
- Closure
- Recursion
- Growing functions
- Functions and side effects
- Summary
- Exercises
Chapter 4 Data Structures: Objects and Arrays
- The weresquirrel
- Data sets
- Properties
- Methods
- Objects
- Mutability
- The lycanthrope’s log
- Computing correlation
- Objects as maps
- The final analysis
- Further arrayology
- Strings and their properties
- The arguments object
- The Math object
- The global object
- Summary
- Exercises
Chapter 5 Higher-Order Functions
- Abstraction
- Abstracting array traversal
- Higher-order functions
- Passing along arguments
- JSON
- Filtering an array
- Transforming with map
- Summarizing with reduce
- Composability
- The cost
- Great-great-great-great-…
- Binding
- Summary
- Exercises
Chapter 6 The Secret Life of Objects
- History
- Methods
- Prototypes
- Constructors
- Overriding derived properties
- Prototype interference
- Prototype-less objects
- Polymorphism
- Laying out a table
- Getters and setters
- Inheritance
- The instanceof operator
- Summary
- Exercises
Chapter 7 Project: Electronic Life
- Definition
- Representing space
- A critter’s programming interface
- The world object
- this and its scope
- Animating life
- It moves
- More life forms
- A more lifelike simulation
- Action handlers
- Populating the new world
- Bringing it to life
- Exercises
Chapter 8 Bugs and Error Handling
- Programmer mistakes
- Strict mode
- Testing
- Debugging
- Error propagation
- Exceptions
- Cleaning up after exceptions
- Selective catching
- Assertions
- Summary
- Exercises
Chapter 9 Regular Expressions
- Creating a regular expression
- Testing for matches
- Matching a set of characters
- Repeating parts of a pattern
- Grouping subexpressions
- Matches and groups
- The date type
- Word and string boundaries
- Choice patterns
- The mechanics of matching
- Backtracking
- The replace method
- Greed
- Dynamically creating RegExp objects
- The search method
- The lastIndex property
- Parsing an INI file
- International characters
- Summary
- Exercises
Chapter 10 Modules
- Why modules help
- Using functions as namespaces
- Objects as interfaces
- Detaching from the global scope
- Evaluating data as code
- Require
- Slow-loading modules
- Interface design
- Summary
- Exercises
Chapter 11 Project: A Programming Language
- Parsing
- The evaluator
- Special forms
- The environment
- Functions
- Compilation
- Cheating
- Exercises
Chapter 12 JavaScript and the Browser
- Networks and the Internet
- The Web
- HTML
- HTML and JavaScript
- In the sandbox
- Compatibility and the browser wars
Chapter 13 The Document Object Model
- Document structure
- Trees
- The standard
- Moving through the tree
- Finding elements
- Changing the document
- Creating nodes
- Attributes
- Layout
- Styling
- Cascading styles
- Query selectors
- Positioning and animating
- Summary
- Exercises
Chapter 14 Handling Events
- Event handlers
- Events and DOM nodes
- Event objects
- Propagation
- Default actions
- Key events
- Mouse clicks
- Mouse motion
- Scroll events
- Focus events
- Load event
- Script execution timeline
- Setting timers
- Debouncing
- Summary
- Exercises
Chapter 15 Project: A Platform Game
- The game
- The technology
- Levels
- Reading a level
- Actors
- Encapsulation as a burden
- Drawing
- Motion and collision
- Actors and actions
- Tracking keys
- Running the game
- Exercises
Chapter 16 Drawing on Canvas
- SVG
- The canvas element
- Filling and stroking
- Paths
- Curves
- Drawing a pie chart
- Text
- Images
- Transformation
- Storing and clearing transformations
- Back to the game
- Choosing a graphics interface
- Summary
- Exercises
Chapter 17 HTTP
- The protocol
- Browsers and HTTP
- XMLHttpRequest
- Sending a request
- Asynchronous Requests
- Fetching XML Data
- HTTP sandboxing
- Abstracting requests
- Promises
- Appreciating HTTP
- Security and HTTPS
- Summary
- Exercises
Chapter 18 Forms and Form Fields
- Fields
- Focus
- Disabled fields
- The form as a whole
- Text fields
- Checkboxes and radio buttons
- Select fields
- File fields
- Storing data client-side
- Summary
- Exercises
Chapter 19 Project: A Paint Program
- Implementation
- Building the DOM
- The foundation
- Tool selection
- Color and brush size
- Saving
- Loading image files
- Finishing up
- Exercises
Chapter 20 Node.js
- Background
- Asynchronicity
- The node command
- Modules
- Installing with NPM
- The file system module
- The HTTP module
- Streams
- A simple file server
- Error handling
- Summary
- Exercises
Chapter 21 Project: Skill-Sharing Website
- Design
- Long polling
- HTTP interface
- The server
- The client
- Exercises
Eloquent JavaScript
Exercise Hints
- Program Structure
- Functions
- Data Structures: Objects and Arrays
- Higher-Order Functions
- The Secret Life of Objects
- Project: Electronic Life
- Bugs and Error Handling
- Regular Expressions
- Modules
- Project: A Programming Language
- The Document Object Model
- Handling Events
- Project: A Platform Game
- Drawing on Canvas
- HTTP
- Forms and Form Fields
- Project: A Paint Program
- Node.js
- Project: Skill-Sharing Website

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