React Js Show Hide Div Based on Dropdown Selection

<!DOCTYPE html>
<html>

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

const countryData = [
      {
        name: 'Australia',
        description: 'Australia is a country and continent surrounded by the Indian and Pacific oceans.',
      },
      {
        name: 'Germany',
        description: 'Germany is a country located in central Europe known for its rich history and cultural heritage.',
      },
      {
        name: 'Brazil',
        description: 'Brazil is the largest country in South America, known for its diverse culture and the Amazon rainforest.',
      },
      {
        name: 'China',
        description: 'China is a populous country in East Asia known for its ancient civilization and rapid modernization.',
      },
      {
        name: 'India',
        description: 'India is a country in South Asia known for its diverse culture, ancient history, and vibrant traditions.',
      },
      {
        name: 'Japan',
        description: 'Japan is an island country in East Asia known for its technological advancements and unique culture.',
      },
      {
        name: 'South Africa',
        description: 'South Africa is a country at the southernmost tip of Africa, known for its diverse landscapes and wildlife.',
      },
      // Add more countries and descriptions as needed
    ];
    const App = () => {
      const [selectedCountry, setSelectedCountry] = useState(''); // State to track the selected country

// Event handler to update the selectedCountry state when dropdown selection changes
      const handleDropdownChange = (event) => {
        const selectedValue = event.target.value;
        setSelectedCountry(selectedValue);
      };

// Find the selected country object from the data
      const selectedCountryData = countryData.find((country) => country.name === selectedCountry);

return (
        <div className='container'>
          <h3>React Js Show Hide Div Based on Dropdown Selection using Map Method</h3>
          {/* Dropdown */}
          <select onChange={handleDropdownChange}>
            <option value="">Select a country</option>
            {countryData.map((country) => (
              <option key={country.name} value={country.name}>
                {country.name}
              </option>
            ))}
          </select>

{/* Div to display country information */}
          {selectedCountryData && (
            <div>
              <h3>{selectedCountryData.name}</h3>
              <p>{selectedCountryData.description}</p>
            </div>
          )}
        </div>
      );

}

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    /* Styles for the container and button */
    .container {
      max-width: 500px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

/* Styling for the select element */
    .container select {
      width: 100%;
      padding: 10px;
      margin-bottom: 10px;
      border: 1px solid #ccc;
      border-radius: 4px;
      font-size: 16px;
      outline: none;
    }

/* Styling for the option elements */
    .container option {
      font-size: 16px;
    }

button {
      background-color: #007bff;
      color: #fff;
      border: none;
      padding: 10px 20px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 16px;
      transition: background-color 0.3s ease;
    }

/* Hover effect for the button */
    button:hover {
      background-color: #0056b3;
    }
  </style>
</body>

</html>