验证输入电子邮件地址在React.js或Node.js中是否存在

import React, { useState } from 'react';

const EmailValidation = () => {
  const [email, setEmail] = useState('');
  const [isValid, setIsValid] = useState(false);

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

  const validateEmail = () => {
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    setIsValid(emailRegex.test(email));
  };

  return (
    <div>
      <input type="text" value={email} onChange={handleEmailChange} />
      <button onClick={validateEmail}>Validate</button>
      {isValid ? <p>Email is valid</p> : <p>Email is invalid</p>}
    </div>
  );
};

export default EmailValidation;

const validator = require('email-validator');

const validateEmail = (email) => {
  return validator.validate(email);
};

const email = 'example@example.com';
const isValid = validateEmail(email);
console.log(isValid ? 'Email is valid' : 'Email is invalid');