# require 、 module.exports

我們以前會把其他js使用`<script src='...'>`標籤引入

在Node.js我們可以使用`require` 與 `module.exports`,`exports`來進行js的引入

require用來引入

module.exports與exports用來輸出

接著我們直接看範例實作

> 你可能會看到其他的模組化方式，例如import，此為ES6的範疇，將在後續章節提到


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://easonwang.gitbook.io/class/chapter1.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.