react 父子组件通信
发布时间:2020-12-15 20:22:16 所属栏目:百科 来源:网络整理
导读:import React from ‘react‘ ;import B from ‘./B‘ ;class A extends React.Component{ state = { msg: ‘我来自于A组件‘ } isClick =(value)= { this .setState({ msg: value }) } render() { return ( div 我是A组件: hr / B msg={ this .state.msg}
import React from ‘react‘; import B from ‘./B‘; class A extends React.Component{ state = { msg:‘我来自于A组件‘ } isClick=(value)=> { this.setState({ msg: value }) } render() { return ( <div> 我是A组件: <hr /> <B msg={this.state.msg} myClick={this.isClick}/> </div> ) } } export default A; import React from ‘react‘; class B extends React.Component{ constructor(props) { super(props) } render() { return ( <div> <h2>我是B组件:{this.props.msg}</h2> <button onClick={() => this.props.myClick(‘我来源于B组件‘)}>按钮</button> </div> ) } } export default B; (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |