React Js Detect Caps lock is on or off

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        const { useState } = React;

const App = () => {
            const [capsLockOn, setCapsLockOn] = useState(false);

const handleKeyUp = (e) => {
                const capsLockIsOn = e.getModifierState('CapsLock');
                setCapsLockOn(capsLockIsOn);
            };

return (
                <div className='container'>
                    <h3>React Js Detect Caps Lock is on or off</h3>
                    <input type="text" onKeyUp={handleKeyUp} />
                    {capsLockOn && <p>Caps Lock is On</p>}
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById('app'));
    </script>
    <style>
        .container {
            text-align: center;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
            width: 600px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

input[type="text"] {
            padding: 10px;
            font-size: 16px;
            border: 2px solid #ccc;
            border-radius: 5px;
            width: 300px;
            margin-bottom: 10px;
        }

p {
            color: red;
            font-size: 14px;
            margin-top: 5px;
        }
    </style>
</body>

</html>