React Js Fetch Data from API | load data without reloading page

<!DOCTYPE html>
<html>

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

function App() {
            const [data, setData] = useState(null);
            const [error, setError] = useState(null);

useEffect(() => {
                async function fetchData() {
                    try {
                        const response = await axios.get(
                            'https://api.coindesk.com/v1/bpi/currentprice.json'
                        );
                        setData(response.data.bpi);
                    } catch (error) {
                        setError(error.message);
                    }
                }
                fetchData();
            }, []);

if (error) {
                return <div>Error: {error}</div>;
            }

if (!data) {
                return <div>Loading...</div>;
            }

// Render your filtered data
            return (
                <div className='container'>
                    <h3>React Async Await Handle HTTP Request with API </h3>
                    <table>
                        <thead>
                            <tr>
                                <th>Currency</th>
                                <th>Rate</th>
                            </tr>
                        </thead>
                        <tbody>
                            {Object.keys(data).map(currency => (
                                <tr key={currency}>
                                    <td>{currency}</td>
                                    <td>{data[currency].rate}</td>
                                </tr>
                            ))}
                        </tbody>
                    </table>
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
    * {
            box-sizing: border-box;
        }

body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
        }

.container {
            text-align: center;
            padding: 20px;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
            margin: 0 auto;
            width: 600px
        }

h3 {
            color: #333;
            text-align: center;
        }

table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
        }

th,
        td {
            padding: 10px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }

thead th {
            background-color: #f5f5f5;
            font-weight: bold;
        }

tbody tr:hover {
            background-color: #f5f5f5;
        }
    </style>
</body>

</html>

 
<!DOCTYPE html>
<html>
​
<head>
    <meta charset="UTF-8" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.production.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.production.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
​
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
​
<body>
    <div id="app"></div>
    <script type="text/babel">
        const { useState, useEffect } = React;
​
        function App() {
            const [data, setData] = useState(null);
            const [error, setError] = useState(null);
​
            useEffect(() => {
                async function fetchData() {
                    try {
                        const response = await axios.get(
                            'https://api.coindesk.com/v1/bpi/currentprice.json'
                        );
                        setData(response.data.bpi);
                    } catch (error) {
                        setError(error.message);
                    }
                }
                fetchData();
            }, []);
​
            if (error) {
                return <div>Error: {error}</div>;
            }
​
            if (!data) {
                return <div>Loading...</div>;
            }
​
            // Render your filtered data
            return (
                <div className='container'>
                    <h3>React Async Await Handle HTTP Request with API </h3>
                    <table>
                        <thead>
                            <tr>
                                <th>Currency</th>
                                <th>Rate</th>
                            </tr>
                        </thead>
                        <tbody>
                            {Object.keys(data).map(currency => (
                                <tr key={currency}>
                                    <td>{currency}</td>
                                    <td>{data[currency].rate}</td>
                                </tr>
                            ))}
                        </tbody>
                    </table>
                </div>
            );
        }
​
        ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
    * {
            box-sizing: border-box;
        }
​
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
        }
​
        .container {
            text-align: center;
            padding: 20px;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
            margin: 0 auto;
            width: 600px
        }
​
        h3 {
            color: #333;
            text-align: center;
        }
​
        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
        }
​
        th,
        td {
            padding: 10px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
​
        thead th {
            background-color: #f5f5f5;
            font-weight: bold;
        }
​
        tbody tr:hover {
            background-color: #f5f5f5;
        }
    </style>
</body>
​
</html>
​