React Js Array Includes Method

<!DOCTYPE html>
<html>

</head>

<body>
    <div id="app"></div>
    <script type="text/babel">
        const { useState } = React;

function App() {
            const array = [1, 2, 3, 4, 5];
            const element = 3;

const elementExists = array.includes(element);

return (
                <div className='container'>
                    <h3 className="title">React Js includes method</h3>
                    <p className="array">Array: {array.join(', ')}</p>
                    <p>Element: {element}</p>
                    <p className={elementExists ? 'yes' : 'no'}>Element exists: {elementExists ? 'Yes' : 'No'}</p>
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById('app'));
    </script>
    <style>
        .container {
            width: 400px;
            margin: 0 auto;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
            padding: 20px;
        }

.title {
            color: #333;
            font-size: 24px;
            margin-bottom: 10px;
        }

.array {
            color: #666;
            font-size: 16px;
            margin-bottom: 5px;
            font-weight: bold;
        }

.yes {
            color: green;
        }

.no {
            color: red;
        }
    </style>
</body>

</html>