SUMMARY.md

Table of contents

• es-features

ES2015 (es6)

• const
• Scoping
  • 1) let
  • 2) Block-scoped Functions
• Arrow Functions
• Extended Parameter Handling
  • 1) Defulat Paramter values
  • 2) Rest Parameter
  • 3) Spread operator
• Termplate Literals
• Destructuring Assignment
• Object properties
• Modules
• Class
  • 1) Class extends
  • 2) static variables in class
  • 3) getter / setter
• Symbol type
• Iterators
• Map/Set & WeakMap/WeakSet
  • 1) Map data-structure
  • 2) Weak-Link data structure
• New Built-In Methods
  • 1) Object.assign
  • 2) find / findIndex
  • 3) string repeat
  • 4) string searching
• Generators
• Promise
• Meta-Programming

ES2016 (es7)

• Array.prototype.includes()
• Exponentiation Operator (지수계산)

ES2017 (es8)

• Intro
• String padding
• Object.values & Object.entries
• Object.getOwnPropertyDescriptors
• Trailing commas
• Async functions

es2018 (es9)

• Rest/Spread Properties
  • 1) spread 속성을 이용한 객체복사
  • 2) Object.assign 효과
  • 3) spread property 객체 복사 특성
  • 4) shallow copy
  • 5) rest 할당
  • 6) rest/spread property 지원
• Asynchronous Iteration
  • 1) Symbol.asyncIterator
  • 2) for...await...of
  • 3) reject try / catch
  • 4) asyncIterator support
• Promise.prototype.finally
  • 1) finally() method
  • 2) finally() method support
• New RegExp Features
  • 1) s(dotAll) flag
  • 2) Named Capture Groups
  • 3) 패턴 사용
  • 4) Unicode property escapes
  • Template Literal Revision

ES2019 (ES10)

• Array.flat & Array.flatMap
• Object.fromEntries
• String.trimStart & trimEnd
• Optional Catch Binding
• Function.toString()

ES2020 (ES11)

• Dynamic imports
• Private Fields in Class
• Optional Chaining Operator
• Nullish Coalescing
• BigInt

ES2021 (ES12)

• String.replaceAll