使用 Maps 和 WeakMaps 可以提高代码的可读性和可维护性。将DOM节点与相关数据关联起来,有助于使代码更清晰易懂。 这篇文章讨论了使用 Maps 和 WeakMaps 处理DOM节点的优势。Maps 和 WeakMaps 是非常实用的工具,尤其在处理大量DOM节点时,它们发挥着重要作用。
This is a fast, lightweight (~1.94kb ungzipped, and only 703 bytes gziped) JavaScript Map and Weakmap polyfill. If you don't want to download the script, then you can ...
WeakMaps 仅允许使用对象作为键,这是 WeakMaps 的一个限制。新功能扩展了 WeakMap API,允许使用唯一的 Symbol 作为键。 2023 年 6 月 27 日,第 125 届 ECMA 大会正式批准了 ECMAScript 2023 语言规范,这意味着它现在正式成为最新 ECMAScript 标准。下面就来看看 ECMAScript 2023 都有 ...
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 ...