> For the complete documentation index, see [llms.txt](https://coffe1891.gitbook.io/frontend-hard-mode-interview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian.md).

# 2.核心概念

- [壹.2.1 函数](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.1.md)
- [壹.2.2 作用域、执行上下文、作用域链](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.2.md)
- [壹.2.3 彻底搞懂 this](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.3.md)
- [壹.2.4 深入理解 call、apply、bind](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.4.md)
- [壹.2.5 面试时高频问到的"闭包"](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.5.md)
- [壹.2.6 原型和原型链](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.6.md)
- [壹.2.7 同步和异步，阻塞和非阻塞](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.7.md)
- [壹.2.8 Event Loop](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.8.md)
- [壹.2.9 强大的数组](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.9.md)
- [壹.2.10 正则表达式](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.10.md)
- [壹.2.11 位操作符与进制转换](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.11.md)
- [壹.2.12 spread和rest操作符](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.12.md)
- [壹.2.13 实现异步非阻塞的任务](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.13.md)
- [壹.2.14 模块化开发](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/2.-he-xin-gai-nian/1.2.14.md): 一线互联网公司几乎都在推行模块化开发