父
this.state={name:''}
handlechild(uname){
this.setState({name:uname})
}
<Children cancal={uname=>this.handleChild(uname)}
子
componentDidMount(){
this.props.cancal('子传父')
}
父
this.state={name:''}
handlechild(uname){
this.setState({name:uname})
}
<Children cancal={uname=>this.handleChild(uname)}
子
componentDidMount(){
this.props.cancal('子传父')
}