首先需要项目中安装events 包： npm install events --save 在src下新建一个util目录里面建一个events.js import { EventEmitter } from 'events';export default new EventEmitter();list1.jsximport React, { Component } from 'react'; import emitter from '../util/events';class List extends Component {constructor(props) {super(props);this.state = {message: 'List1',};}componentDidMount() {// 组件装载完成以后声明一个自定义事件this.eventEmitter = emitter.addListener('changeMessage', (message) => {this.setState({message,});});}componentWillUnmount() {emitter.removeListener(this.eventEmitter);}render() {return (<div>{this.state.message}</div>);} }export default List;List2.jsx import React, { Component } from 'react'; import emitter from '../util/events';class List2 extends Component {handleClick = (message) => {emitter.emit('changeMessage', message);};render() {return (<div><button onClick={this.handleClick.bind(this, 'List2')}>点击我改变List1组件中显示信息</button></div>);} } export default List2;APP.jsximport React, { Component } from 'react'; import List1 from './components/List1'; import List2 from './components/List2';export default class App extends Component {render() {return (<div><List1 /><List2 /></div>);} }

react 兄弟组件如何调用对方的方法  https://segmentfault.com/a/1190000016764713

　　

转载于:https://www.cnblogs.com/whlBooK/p/11207532.html

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