零度实验室
1.1.
简介
1.2.
ECMAScript 2022 (ES13)
1.2.1.
Class Fields
1.2.2.
RegExp Match Indicess
1.2.3.
Top-level await
1.3.
ECMAScript 2021 (ES12)
1.3.1.
String.prototype.replaceAll
1.3.2.
Promise.any
1.3.3.
WeakRefs
1.3.4.
Logical Assignment Operators
1.3.5.
Numeric Separators
1.4.
ECMAScript 2020 (ES11)
1.4.1.
String.prototype.matchAll
1.4.2.
Dynamic Import
1.4.3.
BigInt
1.4.4.
Promise.allSettled
1.4.5.
globalThis
1.4.6.
for-in mechanics
1.4.7.
Optional Chaining
1.4.8.
Nullish coalescing Operator
1.4.9.
import.meta
1.5.
ECMAScript 2019 (ES10)
1.5.1.
Optional catch binding
1.5.2.
JSON superset
1.5.3.
Symbol.prototype.description
1.5.4.
Function.prototype.toString
1.5.5.
Object.fromEntries
1.5.6.
Well-formed JSON.stringify
1.5.7.
String.prototype.{trimStart,trimEnd}
1.5.8.
Array.prototype.{flat,flatMap}
1.6.
ECMAScript 2018 (ES9)
1.6.1.
Template Literal Revision
1.6.2.
s/dotAll flag for regular expressions
1.6.3.
RegExp Named Capture Groups
1.6.4.
Object Rest/Spread Properties
1.6.5.
RegExp Lookbehind Assertions
1.6.6.
Unicode property escapes in regular expressions
1.6.7.
Promise.prototype.finally
1.6.8.
Async Iteration
1.7.
ECMAScript 2017 (ES8)
1.7.1.
Async / Await
1.7.2.
Shared Memory and Atomics
1.7.3.
Object.values / Object.entries
1.7.4.
String padding
1.7.5.
Trailing comma
1.7.6.
Object.getOwnPropertyDescriptors
1.8.
ECMAScript 2016 (ES7)
1.8.1.
Array.prototype.includes
1.8.2.
求幂运算符(**)
本书使用 GitBook 发布
for-in mechanics
Specifying for-in enumeration order
简介
以前在不同的引擎下
for in
循环出来的内容顺序是可能不一样的，现在标准化了。
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