NodeJS套件管理工具

# npm介紹

- node package manager
- [npm官網](https://www.npmjs.com/)

# package.json

- $ npm init

[![](https://4.bp.blogspot.com/-04RgkUsOupM/VuaYTiejJRI/AAAAAAAADrE/aX4I3I-knLcwCvIya7DSSQCtZKVHylqog/s1600/01.png)](https://4.bp.blogspot.com/-04RgkUsOupM/VuaYTiejJRI/AAAAAAAADrE/aX4I3I-knLcwCvIya7DSSQCtZKVHylqog/s1600/01.png)
- [package.json文件](https://docs.npmjs.com/files/package.json)

[![](https://3.bp.blogspot.com/-9av8Fqm3X4Q/VuaYTuv-KtI/AAAAAAAADrA/5F0Xnq8z5K4e3WGN7SnBrUMLC7YuIdh4A/s1600/02.png)](https://3.bp.blogspot.com/-9av8Fqm3X4Q/VuaYTuv-KtI/AAAAAAAADrA/5F0Xnq8z5K4e3WGN7SnBrUMLC7YuIdh4A/s1600/02.png)
# npm指令

- 安裝資料夾 **node_modules**
``` shell

# 安裝套件
$ npm install -g 
$ npm install 

# 安裝並寫入設定檔
$ npm install  --save
$ npm install ** --save-dev

# 移除套件
$ npm uninstall -g 
$ npm uninstall 

# 搜尋套件
$ npm search 

# 列出已安裝的套件
$ npm list -g
$ npm list

# 更新套件
$ npm update -g
$ npm update

# 安裝package.json設定檔的套件
$ npm install -l
```