JavaScript闭包详解的相关内容

文章 2022-05-13 来自：开发者社区

JavaScript 闭包详解

前言继上一篇文章 JavaScript 脚本编译与执行过程简述，再来介绍一下 JavaScript 中神奇的“闭包”（Closure）。闭包是基于词法作用域书写代码时所产生的自然结果。JavaScript 语言是采用了词法作用域。一般情况下，函数、变量的作用域在编写的时候已经确定且不可改变的。除了 eval、with 之外，它...

文章 2012-04-22 来自：开发者社区

JavaScript闭包详解

一、什么是闭包？ “官方”的解释是：所谓“闭包”，指的是一个拥有许多变量和绑定了这些变量的环境的表达式（通常是一个函数），因而这些变量也是该表达式的一部分。相信很少有人能直接看懂这句话，因为他描述的太学术。我想用如何在Javascript中创建一个闭包来告诉你什么是闭包，因为跳过闭包的创建过程直接理解闭包的定义是非常困难的。看下面这段代码： functi...

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更新时间 2022-07-27 12:11:16

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