function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};

const [state, setState] = useState(initialState);

import React, { useState } from "react";

import ReactDOM from "react-dom/client";

​

function FavoriteColor() {

  const [color, setColor] = useState("red");

​

  return (

    <>

      <h1>My favorite color is {color}!</h1>

      <button

        type="button"

        onClick={() => setColor("blue")}

      >Blue</button>

      <button

        type="button"

        onClick={() => setColor("red")}

      >Red</button>

      <button

        type="button"

        onClick={() => setColor("pink")}

      >Pink</button>

      <button

        type="button"

        onClick={() => setColor("green")}

      >Green</button>

    </>

  );

}

​

const root = ReactDOM.createRoot(document.getElementById('root'));

root.render(<FavoriteColor />);

function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};

function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};

function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};

Hooks made it easy to add state even to function components

function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};

function Checkbox() {

  const id = useId();

  return (

    <>

      <label htmlFor={id}>Do you like React?</label>

      <input id={id} type="checkbox" name="react"/>

    </>

  );

};