1. Express 설치express 공식 홈페이지 : https://expressjs.com/ko/ Express - Node.js 웹 애플리케이션 프레임워크Express is a fast, unopinionated, minimalist web framework for Node.js, providing a robust set of features for web and mobile applications.expressjs.com  mkdir tempcd tempnpm initnpm install --save express hello world 예제 : https://expressjs.com/ko/starter/hello-world.html ExpressGet started with Express.js b..