新版本的变更 / ES2020
Optional chaining
Nullish coalescing operator (??)
Promise.allSettled
BigInt
globalThis
Dynamic import()
String.prototype.matchAll
Module re-export: export * as ns
Dynamic import()
此示例属于完整版，可在应用商店购买：
JavaScript Recipes
App Store
Code Recipes
App Store
已经购买？登录您的账户