react.js中两个表单在同一页面上的错误消息处理

import React, { useState } from 'react';

const Form1 = () => {
  const [name, setName] = useState('');
  const [email, setEmail] = useState('');
  const [errorMessage, setErrorMessage] = useState('');

  const handleNameChange = (e) => {
    setName(e.target.value);
  };

  const handleEmailChange = (e) => {
    setEmail(e.target.value);
  };

  const handleSubmit = (e) => {
    e.preventDefault();

    // 验证表单数据
    if (name === '') {
      setErrorMessage('请输入姓名');
      return;
    }

    if (email === '') {
      setErrorMessage('请输入邮箱');
      return;
    }

    // 提交表单数据
    // ...

    // 清空表单字段和错误消息
    setName('');
    setEmail('');
    setErrorMessage('');
  };

  return (
    <form onSubmit={handleSubmit}>
      <div>
        <label>姓名：</label>
        <input type="text" value={name} onChange={handleNameChange} />
      </div>
      <div>
        <label>邮箱：</label>
        <input type="email" value={email} onChange={handleEmailChange} />
      </div>
      {errorMessage && <p>{errorMessage}</p>}
      <button type="submit">提交</button>
    </form>
  );
};

const Form2 = () => {
  const [username, setUsername] = useState('');
  const [password, setPassword] = useState('');
  const [errorMessage, setErrorMessage] = useState('');

  const handleUsernameChange = (e) => {
    setUsername(e.target.value);
  };

  const handlePasswordChange = (e) => {
    setPassword(e.target.value);
  };

  const handleSubmit = (e) => {
    e.preventDefault();

    // 验证表单数据
    if (username === '') {
      setErrorMessage('请输入用户名');
      return;
    }

    if (password === '') {
      setErrorMessage('请输入密码');
      return;
    }

    // 提交表单数据
    // ...

    // 清空表单字段和错误消息
    setUsername('');
    setPassword('');
    setErrorMessage('');
  };

  return (
    <form onSubmit={handleSubmit}>
      <div>
        <label>用户名：</label>
        <input type="text" value={username} onChange={handleUsernameChange} />
      </div>
      <div>
        <label>密码：</label>
        <input type="password" value={password} onChange={handlePasswordChange} />
      </div>
      {errorMessage && <p>{errorMessage}</p>}
      <button type="submit">提交</button>
    </form>
  );
};

const App = () => {
  return (
    <div>
      <h1>表单1</h1>
      <Form1 />
      <h1>表单2</h1>
      <Form2 />
    </div>
  );
};

export default App;