react项目构建

1、react脚手架

      npm install -g create-react-app

      create-react-app myproject

2、页面配置（bootcdn）

 <script src="https://cdn.bootcss.com/react/16.2.0/umd/react.development.js"></script>
  <script src="https://cdn.bootcss.com/react-dom/16.2.0/umd/react-dom.development.js"></script>
  <script src="https://cdn.bootcss.com/babel-standalone/7.0.0-beta.3/babel.js"></script>