React Js Check array or object contains specfic value

<!DOCTYPE html>
<html>

function App() {
            const myArray = ['apple', 'banana', 'orange'];
            const valueToCheck = 'banana'

const isValueInArray = myArray.includes(valueToCheck);

return (
                <div className="container">
                    <h3>React Js Check array contains specfic item or value</h3>
                    <p>Array: {JSON.stringify(myArray)}</p>
                    <p>value to check: {valueToCheck}</p>

{isValueInArray ? (
                        <p>The array contains the value: {valueToCheck}</p>
                    ) : (
                        <p>The array does not contain the value: {valueToCheck}</p>
                    )}
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById("app"));
    </script>

.container {
            margin: 0 auto;
            width: 600px;
            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);
            padding: 20px;
        }

h3 {
            margin-bottom: 20px;
            color: #333;
        }

.container p {
            margin-bottom: 10px;
            font-size: 16px;
        }

.container p:first-child {
            font-weight: bold;
        }

.container p:nth-child(3) {
            color: #008000;
        }

.container p:nth-child(5) {
            color: #ff0000;
        }
    </style>
</body>

</html>