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ES6〜ES13(es2015〜es2022)まとめ

Last updated at Posted at 2017-09-05

ES仕様一覧表

追加仕様 ES
2015
(ES6)
ES
2016
(ES7)
ES
2017
(ES8)
ES
2018
(ES9)
ES
2019
(ES10)
ES
2020
(ES11)
ES
2021
(ES12)
ES
2022
(ES13)
let/const宣言
class構文
Promise
アロー関数
importとexportによるモジュール構文
テンプレート文字列
関数の可変長引数
関数のデフォルト引数
分割代入
配列展開
for of
Map/Set/WeakMap/WeakSet
Symbol
型付き配列
Array.includes
Exponentiation operator
Object.values/Object.entries
String.padStart/String.padEnd
Object.getOwnPropertyDescriptors
末尾カンマ許容
Async/Await
Shared memory and atomics
オブジェクトのRest/Spread
Promise.finally
テンプレートリテラルの改修
正規表現:sオプション
正規表現:名前付きグループ
正規表現:後読み
正規表現:uオプション
for-await-of
catch引数の不要化
JSON superset
Symbol.description
Function.toString revision
Object.fromEntries
Well-formed JSON.stringify
String.trimStart/String.trimEnd
Array.flat/Array.flatMap
BigInt
for-in ループにおける順序保証
ヌル合体(??)演算子
Optional Chaining(?.)
globalThis
String.matchAll
Dynamic Import
export * as ns from module
import.meta
Promise.allSettled
||= &&= ??=
数値セパレータ(_)
String.replaceAll
Promise.any
WeakRef
Top-level await
Array.at/String.at
Private fields(#)
Static fields
静的イニシャライザーブロック
Object.hasOwn
Error.cause
正規表現:dオプション
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