从子组件到父组件共享表单数据值- React js

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

const ParentComponent = () => {
  const [formData, setFormData] = useState('');

  const handleFormChange = (value) => {
    setFormData(value);
  };

  return (
    <div>
      <ChildComponent formData={formData} onFormChange={handleFormChange} />
      <p>父组件中的表单数据值：{formData}</p>
    </div>
  );
};

export default ParentComponent;

// 子组件
import React from 'react';

const ChildComponent = ({ formData, onFormChange }) => {
  const handleInputChange = (e) => {
    const value = e.target.value;
    onFormChange(value);
  };

  return (
    <div>
      <input type="text" value={formData} onChange={handleInputChange} />
    </div>
  );
};

export default ChildComponent;