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) {
super(props);
this.state = {
txt0:"默认值0",
txt1:"默认值1"
}
}
componentDidMount(){
}
parToson(){
this.setState({
txt0:"哈哈哈哈"
})
}
sonToPar(e){
this.setState({
txt1:e
})
}
render(){
const style={
paddingLeft:"150px"
}
return(
<div style={style}>
<button onClick={this.parToson.bind(this)}>传值给子组件</button>
<div>接受子组件的传值为:{this.state.txt1}</div>
<br/>
<Child message={this.state.txt0} getsonToPar={this.sonToPar.bind(this)}/>
</div>
)
}
}
子组件:
import React, { Component } from 'react';
class child extends Component{
constructor(props) {
super(props);
this.state = {
msg:"啦啦啦啦"
}
}
componentDidMount(){
}
render(){
return(
<div>
<div>接受父组件传的值为:{this.props.message}</div>
<button onClick={()=>this.props.getsonToPar(this.state.msg)}>传值给父组件</button>
</div>
)
}
}
export default child;
github:https://github.com/Rossy11/re...
来源:https://segmentfault.com/a/1190000016992970
以上是 React父子组件间的传值 的全部内容, 来源链接: utcz.com/z/382219.html