how to use form in reactjs code example

Example 1: form in react

import React, { useState } from "react";
import "./styles.css";
function Form() {
  const [firstName, setFirstName] = useState("");
  const [lastName, setLastName] = useState("");
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  return (
    <form>
      <input
        value={firstName}
        onChange={e => setFirstName(e.target.value)}
        placeholder="First name"
        type="text"
        name="firstName"
        required
      />
      <input
        value={lastName}
        onChange={e => setLastName(e.target.value)}
        placeholder="Last name"
        type="text"
        name="lastName"
        required
      />
      <input
        value={email}
        onChange={e => setEmail(e.target.value)}
        placeholder="Email address"
        type="email"
        name="email"
        required
      />
      <input
        value={password}
        onChange={e => setPassword(e.target.value)}
        placeholder="Password"
        type="password"
        name="password"
        required
      />
      <button type="submit">Submit</button>
    </form>
  );
}
export default Form;

Example 2: form in react js

// functional react form 

import React, { useState } from "react";

export function Form() {
	const [name, setName] = useState("");


	const handleSubmit = (evt) => {
		evt.preventDefault();
		alert(`Submitting Name ${name}`)
	}
	const changeName = (e) => {
		setName(e.target.value)
	}
	return (
		<form onSubmit={handleSubmit}>
			<br />
			<br />
			<label>
				Frirst Name:
        <input
					type="text"
					value={name}
					onChange={changeName}
				/>
			</label>
			<input type="submit" value="Submit" />
		</form>
	);
}
export default Form;