Home,js

import React, {Component} from 'react'; import News from "./News"; class Home extends Component {render() {return (<div>home<News name="你好"/></div>);} }export default Home;

news,js

import React, {Component} from 'react'; import PropTypes from 'prop-types';class News extends Component {constructor(props) {super(props);this.state={num:1111}}fun(){this.setState({num:222})}render() {return (<div>News-----{this.props.name}-----{this.state.num}<button onClick={this.fun.bind(this)}>哈哈</button></div>);} }News.propTypes = {};export default News;

app.js

import React from 'react';import './App.css'; import Home from './components/Home.js' function App() {return (<div className="App">你好<Home></Home></div>); }export default App;

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