What is Virtual DOM?
- A representation of the browser's DOM in memory
- A tool for debugging React components
- A type of web server used for server-side rendering
- A virtual machine that runs JavaScript code in the browser
The Virtual DOM is a representation of the browser's DOM in memory. It is used by React to optimize and speed up updates to the actual DOM by minimizing the number of changes that need to be made. When a component's state changes, React updates the Virtual DOM and compares it to the previous version. It then calculates the most efficient way to update the actual DOM based on the differences between the two versions.
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