es6 JavaScript map数据结构的相关内容

文章 2023-02-22 来自：开发者社区

【ES6】JS的Set和Map数据结构

引言：Java、C++早就有了Map、泛型等概念。ES6正式归纳了Set和Map数据结构。一、Set1、基本用法 ES6提供了新的数据结构Set。它类似于数组，但是成员的值都是唯一的，没有重复的值。Set本身是一个构造函数，用来生成Set数据结构。var S = new Set(); [2,3,5,4,5,2,2].map(x => s. add(x)) for (i o....

文章 2022-10-02 来自：开发者社区

ES6--》JS中Set 和 Map数据结构

SetES6提供了新的数据结构 Set（集合）。它类似于数组，但成员的值都是唯一的，集合实现了iterator接口，所以可以使用 [扩展运算符] 和 [for...of] 进行遍历。基本使用添加新的元素Set函数可以接受一个数组(或者具有iterable接口的其他数据结构)作为参数，用来初始化。 <script>// 声明一个 setlets=newSet([1,2,2,3,4,4....

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更新时间 2024-06-10 12:44:01

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