使用 Node.js 需要了解多少 JavaScript？

¥How much JavaScript do you need to know to use Node.js?

作为初学者，很难对自己的编程能力充满信心。在学习编码时，你可能还会对 JavaScript 在哪里结束以及 Node.js 在哪里开始感到困惑，反之亦然。

¥As a beginner, it's hard to get to a point where you are confident enough in your programming abilities. While learning to code, you might also be confused at where does JavaScript end, and where Node.js begins, and vice versa.

在深入研究 Node.js 之前建议学习什么？

¥What is recommended to learn before diving deep with Node.js?

• 词汇结构

  ¥Lexical Structure

• 表达式

  ¥Expressions

• 数据类型

  ¥Data Types

• 类

  ¥Classes

• 变量

  ¥Variables

• 函数

  ¥Functions

• this 操作符

  ¥this operator

• 箭头函数

  ¥Arrow Functions

• 循环

  ¥Loops

• 作用域

  ¥Scopes

• 数组

  ¥Arrays

• 模板字面量

  ¥Template Literals

• 严格模式

  ¥Strict Mode

• ECMAScript 2015 (ES6) 及更高版本

  ¥ECMAScript 2015 (ES6) and beyond

记住这些概念，你就有望成为一名熟练的 JavaScript 开发者，无论是在浏览器还是在 Node.js 中。

¥With those concepts in mind, you are well on your road to become a proficient JavaScript developer, in both the browser and in Node.js.

异步编程

¥Asynchronous Programming

以下概念也是理解异步编程的关键，异步编程是 Node.js 的基本部分之一：

¥The following concepts are also key to understand asynchronous programming, which is one of the fundamental parts of Node.js:

• 异步编程和回调

  ¥Asynchronous programming and callbacks

• 定时器

  ¥Timers

• Promise

• Async 和 Await

  ¥Async and Await

• 闭包

  ¥Closures

• 事件循环

  ¥The Event Loop