单击子组件中的元素时更新父组件的状态

// 父组件
import React, { useState } from 'react';
import ChildComponent from './ChildComponent';

const ParentComponent = () => {
  const [parentState, setParentState] = useState('');

  const updateParentState = (data) => {
    setParentState(data);
  };

  return (
    <div>
      <ChildComponent updateParentState={updateParentState} />
      <p>父组件状态: {parentState}</p>
    </div>
  );
};

export default ParentComponent;

// 子组件
import React from 'react';

const ChildComponent = ({ updateParentState }) => {
  const handleClick = () => {
    const data = '更新的数据';
    updateParentState(data);
  };

  return (
    <button onClick={handleClick}>点击更新父组件状态</button>
  );
};

export default ChildComponent;