在Centos6或7上安装nodejs最简单的方式还是yum，但是默认epel源中nodejs版本过旧，本文介绍下新版nodejs安装方法。

方法来自：https://github.com/nodesource/distributions

1、安装NodeJS10.x
curl -sL https://rpm.nodesource.com/setup_10.x | bash - yum install nodejs

|-----|-----------------------------------------------------------------------------| | 1 2 | curl -sL https://rpm.nodesource.com/setup_10.x | bash - yum install nodejs |

2、查看版本
node -v v10.16.3

|-----|------------------| | 1 2 | node -v v10.16.3 |

npm -v 6.9.0

|-----|--------------| | 1 2 | npm -v 6.9.0 |

3、更换镜像（可选）

更换淘宝镜像
npm config set registry https://registry.npm.taobao.org

|---|---------------------------------------------------------| | 1 | npm config set registry https://registry.npm.taobao.org |

查看是否更换成功
npm config get registry

|---|-------------------------| | 1 | npm config get registry |

更换回官方源
npm config set registry https://registry.npmjs.org

|---|----------------------------------------------------| | 1 | npm config set registry https://registry.npmjs.org |

附：安装其他版本的NodeJS

NodeJS 12.x
curl -sL https://rpm.nodesource.com/setup_12.x | bash - yum install nodejs

|-----|-----------------------------------------------------------------------------| | 1 2 | curl -sL https://rpm.nodesource.com/setup_12.x | bash - yum install nodejs |

NodeJS 11.x
curl -sL https://rpm.nodesource.com/setup_11.x | bash - yum install nodejs

|-----|-----------------------------------------------------------------------------| | 1 2 | curl -sL https://rpm.nodesource.com/setup_11.x | bash - yum install nodejs |

NodeJS 8.x
curl -sL https://rpm.nodesource.com/setup_8.x | bash - yum install nodejs

|-----|----------------------------------------------------------------------------| | 1 2 | curl -sL https://rpm.nodesource.com/setup_8.x | bash - yum install nodejs |