1. Installation environment
1. Native system: Windows 10 Pro (64-bit)
2. Node.js: v6.9.2LTS (64-bit)
Second, install Node.js steps
1. Download the Node.js version corresponding to your system: https://nodejs.org/en/download/
2. Select the installation directory for installation
3. Environment configuration
4. Test
3. Preliminary preparation
1. Introduction to Node.js
Simply put, Node.js is JavaScript running on the server side. Node.js is a JavaScript runtime environment based on the Chrome V8 engine. Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient. npm , the package manager for Node.js , is the world's largest ecosystem of open source libraries.
2. Download Node.js
Open the official website download link: https://nodejs.org/en/download/ I downloaded node-v6.9.2-x64.msi here, as shown below:
Fourth, start the installation
1. After the download is complete, double-click "node-v6.9.2-x64.msi" to start installing Node.js
Click the [Next] button
Check the box and click the [Next] button
After modifying the directory, click the [Next] button
After installation, click the [Finish] button to complete the installation
So far Node.js has been installed, you can first perform a simple test to see if the installation is successful, and then configure
the environment. Press the [win+R] key on the keyboard, enter cmd, and then press Enter to open the cmd window.
The directory after installation is as shown below:
此处说明下：新版的Node.js已自带npm，安装Node.js时会一起安装，npm的作用就是对Node.js依赖的包进行管理，也可以理解为用来安装/卸载Node.js需要装的东西
常规NodeJS的搭建到现在为止已经完成了，急不及待的话你可以在”cmd“输入”node“进入node开发模式下，输入你的NodeJS第一句：”hello world“ - 输入：console.log('hello world')。
五、环境配置
说明：这里的环境配置主要配置的是npm安装的全局模块所在的路径，以及缓存cache的路径，之所以要配置，是因为以后在执行类似：npm install express [-g] （后面的可选参数-g，g代表global全局安装的意思）的安装语句时，会将安装的模块安装到【C:\Users\用户名\AppData\Roaming\npm】路径中，占C盘空间。
例如：我希望将全模块所在路径和缓存路径放在我node.js安装的文件夹中，则在我安装的文件夹【D:\Develop\nodejs】下创建两个文件夹【node_global】及【node_cache】如下图：
创建完两个空文件夹之后，打开cmd命令窗口，输入
npm config set prefix "D:\Develop\nodejs\node_global"
npm config set cache "D:\Develop\nodejs\node_cache"
接下来设置环境变量，关闭cmd窗口，“我的电脑”-右键-“属性”-“高级系统设置”-“高级”-“环境变量”
进入环境变量对话框，在【系统变量】下新建【NODE_PATH】，输入【D:\Develop\nodejs\node_global\node_modules】，将【用户变量】下的【Path】修改为【D:\Develop\nodejs\node_global】
六、测试
配置完后，安装个module测试下，我们就安装最常用的express模块，打开cmd窗口，
输入如下命令进行模块的全局安装：
npm install express -g # -g是全局安装的意思