原创 最新推荐文章于 2026-09-20 12:31:55 发布 · 176 阅读 WeakMap 是 JavaScript 中一种特殊的键值对集合，它与常规 Map 的关键区别在于键必须是对象且持有弱引用。这意味着当键对象没有其他引用时 ...

This proposal extends the WeakMap API to allow usage of unique Symbols as keys. Currently, WeakMaps are limited to only allow objects as keys, and this is a limitation for WeakMaps as the goal is to ...

Quick note on JavaScript WeakMaps for WeakMap Wednesdays WeakMap is like a Map, but with keys that don’t prevent the referenced objects from being garbage-collected. It’s useful for associating data ...