react 父子传值_React父子组件间的传值

父组件：

import React, { Component } from 'react';

import Child from './chlid';

class parent extends Component{

constructor(props) {

父组件改变子组件数据react？super(props);

this.state = {

txt0:"默认值0",

txt1:"默认值1"

}

}

react 父组件调用子组件方法、componentDidMount(){

}

parToson(){

this.setState({

txt0:"哈哈哈哈"

})

react兄弟组件传值、}

sonToPar(e){

this.setState({

txt1:e

})

}

react父子组件数双向传递。render(){

const style={

paddingLeft:"150px"

}

return(

父子组件传值，)

}

}

子组件：

import React, { Component } from 'react';

class child extends Component{

react this，constructor(props) {

super(props);

this.state = {

msg:"啦啦啦啦"

}

}

react类组件，componentDidMount(){

}

render(){

return(

)

react 组件。}

}

export default child;