Intro line -
The Real DOM and the Virtual DOM both represent the structure of a webpage, however, they function and interact with the webpage differently.
3 Points Compared and Contrasted:
Performance
Real DOM: Manipulations with the Real DOM can be costly due to the browser's complex render tree construction, causing performance slowdowns.
Virtual DOM: The Virtual DOM enhances performance by updating only the changed parts in the Real DOM, reducing costly operations.
Direct Manipulation
Real DOM: You directly modify the Real DOM when using standard JavaScript or jQuery, providing more control but increasing complexity.
Virtual DOM: Virtual DOM is manipulated indirectly through a library like React. The library handles updating the Real DOM, simplifying development in complex applications.
Memory Usage
Real DOM: Uses less memory as there's no need to maintain a separate representation.
Virtual DOM:Requires additional memory to maintain a lightweight copy of the Real DOM, which can increase overall memory footprint, but typically provides performance benefits.