React组件状态管理：statesuper()setState:是异步的this.setState({}) merge上面的state的操作，1.setState实质上是将传入的第一个参数对象的state对象做merge2.如果依据愿原有的state更新state，最好传入一个函数，setState((prevState)=>{return xxx},callback(回调，等待上一...
React轻量级UI库React高性能的体现：虚拟DOM-在内存数据，性能极高。React Fiber 16+核心算法-分片哪里用了JSX，哪里就要引Re...
原生版 React-router-native浏览器版本 React-router-domyarn add react-router-domimport {BrowserRouter as Router,Route,Switch} from 'react-router-dom'<Router><Route path='/' exact component={Cookboo...
React Create React App1.npx create-react-app basicindex.jsimport React from '...