JavaScript闭包执行上下文的相关内容

文章 2023-08-05 来自：开发者社区

深入解析 JavaScript 中的闭包、作用域和执行上下文

闭包的含义在讲述闭包的概念时，一般有两种说法： ①一个函数可以访问并操作位于其外部的变量。 function closureExample() { let num = 1 function printNum() { num++ // 改变位于函数外部的变量num console.log(num) // 访问位于函数外部的变量num } ...

文章 2023-02-17 来自：开发者社区

重学前端 18 # JavaScript的闭包和执行上下文

一、函数执行过程相关知识二、闭包（closure）闭包其实只是一个绑定了执行环境的函数，闭包与普通函数的区别是，它携带了执行的环境，就像人在外星中需要自带吸氧的装备一样，这个函数也带有在程序中生存的环境。2.1、古典的闭包环境部分环境标识符列表表达式部分2.2、JavaScript 中闭包环境部分环境：函数的词法环境（执行上下文的一部分）标....

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