javascript标准

ECMAScript

ECMAScript标准

ES6（ECMAScript 2015）

ES6 Features

ES6 Features

ES6入门教程

ES7（ECMAScript 2016）

Array.prototype.includes

Exponentiation operator

ES8（ECMAScript 2017）

Object.values/Object.entries

String padding

Object.getOwnPropertyDescriptors

Trailing commas in function parameter lists and calls

Async functions

Shared memory and atomics

ECMAScript 2018

Lifting template literal restriction

s (dotAll) flag for regular expressions

RegExp named capture groups

Rest/Spread Properties

RegExp Lookbehind Assertions

RegExp Unicode Property Escapes

Promise.prototype.finally

Asynchronous Iteration

ECMAScript 2019

Optional catch binding

JSON superset

Symbol.prototype.description

Function.prototype.toString revision

Object.fromEntries

Well-formed JSON.stringify

String.prototype.{trimStart,trimEnd}

Array.prototype.{flat,flatMap}

ECMAScript 2020

String.prototype.matchAll

import()

BigInt

Promise.allSettled

globalThis

for-in mechanics

Optional Chaining

Nullish coalescing Operator

import.meta

ECMAScript 2021

String.protoype.replaceAll

Promise.any

WeakRefs

Logical Assignment Operators

Numeric separators

ECMAScript 2022

Class Fields (Private instance methods and accessors, Class Public Instance Fields & Private Instance Fields, Static class fields and private static methods)

RegExp Match Indices

Top-level await

Ergonomic brand checks for Private Fields

.at()

Accessible Object.prototype.hasOwnProperty

Class Static Block

Error Cause

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