Map 简介 ES6 新增了数据结构 Map，与普通对象 object 类似，也是键值对的集合，特征如下：有序（将元素添加的先后顺序作为其次序）【object 无序】键可以是任意数据类型【object 的键只能是字符串/Symbol】 Map是一个纯哈希结构，而Object不是（它拥有自己的内部逻辑）。 ...

文章 2024-06-17 来自：开发者社区

【JavaScript】JavaScript中call、apply与bind的区别：进阶特性与应用场景

引言在深入探讨 JavaScript 中的函数调用机制时，我们不可避免地会遇到三种强大而灵活的方法：call(), apply() 和 bind()。这三种方法不仅赋予了开发者精细控制函数执行上下文的能力，还能灵活地传递参数，极大地扩展了函数应用的范围和可能性。掌握它们的工作原理和应用场景，对于理解JavaScript中的面向对象编程、闭包以及异步处理等核心概念至关重要...

文章 2024-02-04 来自：开发者社区

前端JavaScript中的 == 和 ===区别，以及他们的应用场景，快来看看吧，积累一点知识。

一、等于操作符等于操作符用两个等于号（ == ）表示，如果操作数相等，则会返回 true 前面文章，我们提到在JavaScript中存在隐式转换。等于操作符（==）在比较中会先进行类型转换，再确定操作数是否相等遵循以下规则：如果任一操作数是布尔值，则将其转换为数值再比较是否相等 ...

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