调用子组件React中的父方法

import React, { Component } from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends Component {
  parentMethod = () => {
    console.log('这是父组件的方法');
  }

  render() {
    return (
      <div>
        <ChildComponent parentMethod={this.parentMethod} />
      </div>
    );
  }
}

export default ParentComponent;

import React, { Component } from 'react';

class ChildComponent extends Component {
  childMethod = () => {
    this.props.parentMethod();
  }

  render() {
    return (
      <div>
        <button onClick={this.childMethod}>调用父方法</button>
      </div>
    );
  }
}

export default ChildComponent;