React JS 개발 환경을 설정 해 보자
/bin/bash -c "$(curl -fsSL <https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh>)"brew --versionbrew install nodenode -vnpm --versionsudo npm install -g create-react-appsudo npm install npx -gnpx -vmkdir jsnpx create-react-app ./jscd js
npm start
chrome에서 http://localhost:3000/
