尝试使用ref访问子组件中的父函数

import React, { Component } from 'react';

class ParentComponent extends Component {
  parentRef = React.createRef();

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

  parentFunction() {
    // 父函数的实现逻辑
  }
}

import React, { Component } from 'react';

class ChildComponent extends Component {
  render() {
    return (
      <div>
        <button onClick={this.handleButtonClick}>访问父函数</button>
      </div>
    );
  }

  handleButtonClick = () => {
    this.props.parentRef.current.parentFunction();
  };
}