React Js Dropdown onChange Event

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

function App() {
            const [selectedSchool, setSelectedSchool] = useState('');

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

.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;
        }

h1 {
            font-size: 24px;
            margin-bottom: 20px;
        }

select {
            padding: 10px;
            font-size: 16px;
            border-radius: 5px;
            border: 1px solid #ccc;
            width: 250px;
            margin-bottom: 10px;
        }

p {
            font-size: 18px;
        }
    </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>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        const { useState } = React
​
        function App() {
            const [selectedSchool, setSelectedSchool] = useState('');
​
            const handleDropdownChange = (event) => {
                setSelectedSchool(event.target.value);
            };
            return (
                <div className="container" >
                    <h1>React Js Dropdown onChange Event</h1>
                    <select value={selectedSchool} onChange={handleDropdownChange}>
                        <option value="">Select a school</option>
                        <option value="Harvard University">Harvard University</option>
                        <option value="Stanford University">Stanford University</option>
                        <option value="Massachusetts Institute of Technology">Massachusetts Institute of Technology</option>
                        <option value="University of California, Berkeley">University of California, Berkeley</option>
                        {/* Add more options as needed */}
                    </select>
                    <p>Selected School: {selectedSchool}</p>
                </div>
            );
        }
​
        ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
        * {
            box-sizing: border-box;
        }
​
        .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;
        }
​
        h1 {
            font-size: 24px;
            margin-bottom: 20px;
        }
​
        select {
            padding: 10px;
            font-size: 16px;
            border-radius: 5px;
            border: 1px solid #ccc;
            width: 250px;
            margin-bottom: 10px;
        }
​
        p {
            font-size: 18px;
        }
    </style>
</body>
​
</html>