如何使用react钩子编写电子邮件和密码验证

import React, { useState, useEffect } from 'react';

const LoginComponent = () => {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');

  useEffect(() => {
    // 在这里可以添加对email和password的验证逻辑
  }, [email, password]);

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

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

  const handleSubmit = (e) => {
    e.preventDefault();
    // 在这里可以添加提交表单的逻辑
  };

  return (
    <form onSubmit={handleSubmit}>
      <label>
        Email:
        <input type="email" value={email} onChange={handleEmailChange} />
      </label>
      <label>
        Password:
        <input type="password" value={password} onChange={handlePasswordChange} />
      </label>
      <button type="submit">Login</button>
    </form>
  );
};

export default LoginComponent;

useEffect(() => {
  const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
  const isEmailValid = emailRegex.test(email);
  const isPasswordValid = password.length >= 6;

  // 在这里可以根据验证结果更新页面状态或执行其他操作
}, [email, password]);

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

  // 在这里可以发送请求到服务器进行验证
};