How to use useRef hook basic example.

useRef_hook.js

import { useRef } from 'react';

function App() {
const formInputRef = useRef(null)

const focusInput = () => {
    formInputRef.current.focus();
}

return (
    <>
        <h1>Using useRef hook to access underlying DOM</h1>
        <input ref={formInputRef} type="text" />
        <button onClick={focusInput}>Focus input</button>
    </>
)
}