https://nodejs.org/en/
下载后，上传到CentOS服务器上（可通过ftp，scp等方式上传，位置随意）

https://github.com/nodejs/help/wiki/Installation

VERSION=v10.15.0
DISTRO=linux-x64
sudo mkdir -p /usr/local/lib/nodejs
sudo tar -xJvf node-$VERSION-$DISTRO.tar.xz -C /usr/local/lib/nodejs

# Nodejs
VERSION=v10.15.0
DISTRO=linux-x64
export PATH=/usr/local/lib/nodejs/node-$VERSION-$DISTRO/bin:$PATH

source /etc/profile

node -v
npm version
npx -v

https://nodejs.org/en/docs/guides/getting-started-guide/

const http = require('http');

const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader("Content-Type", "text/html; charset=utf-8")
  res.end('Hello World');
});

server.listen(port, () => {
  console.log(`Server running at http://ip:${port}/`);
});

node app.js

npm config set registry https://registry.npm.taobao.org

npm config set registry https://registry.npmjs.org/