heartsdance的博客

如下可以将 id = 1 作为 props 传入每个子组件中，注意要使用返回值作为新的 children，原来的 children 并没有发生改变React.Children.map(this.props.children, child => { return React.cloneElement(child, { id: 1, });})详细示例如下import React, { PureComponent } from 'react';export d

import React, {Component} from 'react';export default class Parent extends Component { onRef = ref => { this.childRef = ref } click = () => { this.childRef.sayHello() } render() { return (