import React, {Component} from ‘react‘;
export default class Parent extends Component {
render() {
return(
<div> <Child onRef={this.onRef} />
<button onClick={this.click} >click</button>
</div>
)
}
onRef = (ref) => {
this.child = ref
}
click = (e) => {
this.child.myName()
}
}
class Child extends Component {
constructor(props){ super(props); this.state = {value: ‘‘};}
componentDidMount(){
this.props.onRef(this)
}
myName = () => {
this.setState({value:‘boonook‘});
}
render(){ return( <div> 我是子组件 <input value={this.state.value} type="text"/> </div> )}
}
原文地址:https://www.cnblogs.com/boonook/p/9598470.html
时间: 2024-11-06 03:37:56