使用子组件中的funciton更改父组件的状态

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

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

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

  return (
    <div>
      <ChildComponent updateParentState={updateParentState} />
      <p>Parent State: {parentState}</p>
    </div>
  );
};

export default ParentComponent;

// 子组件
import React from 'react';

const ChildComponent = ({ updateParentState }) => {
  const handleClick = () => {
    updateParentState('New State');
  };

  return (
    <button onClick={handleClick}>Change Parent State</button>
  );
};

export default ChildComponent;