本内容遵循CC 4.0 BY-SA版权协议 WeakMap 是 JavaScript 中一种特殊的键值对集合,它与常规 Map 最显著的区别在于键必须是对象类型(非原始值),并且持有的是对键的"弱引用"。这意味着当键对象在 ...
Accepting Symbol values as WeakMap keys would allow JavaScript libraries to implement their own RefCollection-like things which could be reusable (avoiding the need to pass around the mapping all over ...