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ECMAScript 2020 Online Book
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Table of contents
- I BACKGROUND
- 1 About this book
- 2 FAQ: Book and supplementary material
- 3 History and evolution of JavaScript
- 4 FAQ: JavaScript
- 4.1 What are good references for JavaScript?
- 4.2 How do I find out what JavaScript features are supported where?
- 4.3 Where can I look up what features are planned for JavaScript?
- 4.4 Why does JavaScript fail silently so often?
- 4.5 Why can’t we clean up JavaScript, by removing quirks and outdated features?
- 4.6 How can I quickly try out a piece of JavaScript code?
- II FIRST STEPS
- III VARIABLES AND VALUES
- IV PRIMITIVE VALUES
- 13 The non-values
undefinedandnull - 14 Booleans
- 15 Numbers
- 15.1 Numbers are used for both floating point numbers and integers
- 15.2 Number literals
- 15.3 Arithmetic operators
- 15.4 Converting to number
- 15.5 Error values
- 15.6 Error value:
NaN - 15.7 Error value:
Infinity - 15.8 The precision of numbers: careful with decimal fractions
- 15.9 (Advanced)
- 15.10 Background: floating point precision
- 15.11 Integer numbers in JavaScript
- 15.12 Bitwise operators
- 15.13 Quick reference: numbers
- 16
Math - 17 Unicode – a brief introduction (advanced)
- 18 Strings
- 19 Using template literals and tagged templates
- 20 Symbols
- 13 The non-values
- V CONTROL FLOW AND DATA FLOW
- VI MODULARITY
- 24 Modules
- 24.1 Overview: syntax of ECMAScript modules
- 24.2 JavaScript source code formats
- 24.3 Before we had modules, we had scripts
- 24.4 Module systems created prior to ES6
- 24.5 ECMAScript modules
- 24.6 Named exports and imports
- 24.7 Default exports and imports
- 24.8 More details on exporting and importing
- 24.9 npm packages
- 24.10 Naming modules
- 24.11 Module specifiers
- 24.12 Loading modules dynamically via
import()[ES2020] - 24.13
import.meta.url - 24.14 Polyfills: emulating native web platform features (advanced)
- 25 Single objects
- 26 Prototype chains and classes
- 24 Modules
- VII COLLECTIONS
- 27 Synchronous iteration
- 28 Arrays (
Array)- 28.1 The two roles of Arrays in JavaScript
- 28.2 Basic Array operations
- 28.3
for-ofand Arrays [ES6] - 28.4 Array-like objects
- 28.5 Converting iterable and Array-like values to Arrays
- 28.6 Creating and filling Arrays with arbitrary lengths
- 28.7 Multidimensional Arrays
- 28.8 More Array features (advanced)
- 28.9 Adding and removing elements (destructively and non-destructively)
- 28.10 Methods: iteration and transformation (
.find(),.map(),.filter(), etc.) - 28.11
.sort(): sorting Arrays - 28.12 Quick reference:
Array<T>
- 29 Typed Arrays: handling binary data (Advanced)
- 30 Maps (
Map) - 31 WeakMaps (
WeakMap) - 32 Sets (
Set) - 33 WeakSets (
WeakSet) - 34 Destructuring
- 34.1 A first taste of destructuring
- 34.2 Constructing vs. extracting
- 34.3 Where can we destructure?
- 34.4 Object-destructuring
- 34.5 Array-destructuring
- 34.6 Examples of destructuring
- 34.7 What happens if a pattern part does not match anything?
- 34.8 What values can’t be destructured?
- 34.9 (Advanced)
- 34.10 Default values
- 34.11 Parameter definitions are similar to destructuring
- 34.12 Nested destructuring
- 35 Synchronous generators (advanced)
- VIII ASYNCHRONICITY
- 36 Asynchronous programming in JavaScript
- 37 Promises for asynchronous programming
- 37.1 The basics of using Promises
- 37.2 Examples
- 37.3 Error handling: don’t mix rejections and exceptions
- 37.4 Promise-based functions start synchronously, settle asynchronously
- 37.5 Promise combinators: working with Arrays of Promises
- 37.6 Concurrency and
Promise.all()(advanced) - 37.7 Tips for chaining Promises
- 38 Async functions
- 39 Asynchronous iteration
- IX MORE STANDARD LIBRARY
- X APPENDICES
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