1. JavaScript 类型系统概述 JavaScript 作为一门动态弱类型语言，其类型系统设计独具特色。与静态类型语言不同，变量在声明时不需要指定类型，同一个变量可以在不同时刻持有不同类型的值。这种灵活性为开发带来便利的同时，也引入了类型相关的独特行为模式。

本内容遵循CC 4.0 BY-SA版权协议 本文系统解析JavaScript核心概念，涵盖基础语法、数据类型、函数与作用域；深入ES6+特性、异步 ...

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