Why does react really need a Virtual Dom (https://codingdrips.eu)?

 React uses a Virtual DOM (Document Object Model) to improve performance and optimize updates to the user interface. Here are a few reasons why a Virtual DOM is essential to React:

1. Faster updates: React's Virtual DOM allows it to update the UI more efficiently by minimizing the number of manipulations required on the actual DOM. Instead of updating the entire DOM tree, React compares the Virtual DOM to the previous state and determines only the parts that need to be updated, making updates faster and more efficient.

2. Cross-platform compatibility: React's Virtual DOM allows it to work across different platforms, including browsers, mobile devices, and servers. By providing a consistent representation of the UI across all platforms, the Virtual DOM simplifies the development process and enables developers to create scalable, cross-platform applications.

3. Easier testing: React's Virtual DOM makes it easier to test the UI because developers can create test cases using the Virtual DOM, without needing to interact with the actual DOM. This makes testing more efficient and enables developers to catch errors and bugs earlier in the development process.

4. Improved performance: By reducing the number of DOM manipulations required, React's Virtual DOM can improve the overall performance of the application. This is especially important for complex applications with large amounts of data and frequent updates.

Overall, React's Virtual DOM is a key component of its architecture and plays an important role in improving performance, cross-platform compatibility, testing, and overall user experience.