React Contact Form without using state

contactForm1.js

import React from 'react';

const ContactForm = () => {
  function handleSubmit(event) {
    event.preventDefault();
    const data = {};
    const formElements = Array.from(event.target);
    formElements.map(input => (data[input.name] = input.value));
  }
  
  return (
    <div>
      <form onSubmit={handleSubmit}>
        <input name="firstName" type="text">First Name<input>
        <input name="lastName" type="text">Last Name<input>
        <input name="address" type="text">Adress<input>
        <input name="zip" type="text">Zipcode<input>
        <input name="city" type="text">City<input>
        ...
        <button type="submit">Submit</button>
     </form>
    </div>
  );
}