Another notable feature is the use of a virtual [[Document Object Model]], or [[Virtual DOM]]. React creates an [[In-memory processing|in-memory]] data-structure cache, computessimilar to the resultingbrowser differencesDOM. Every time components are rendered, andthe result is compared with the virtual DOM. It then updates the browser's displayed DOM efficiently with only the computed differences.<ref name="React Blog">{{cite web |title=Refs and the DOM |url=https://reactjs.org/docs/refs-and-the-dom.html |access-date=2021-07-19 |website=React Blog |archive-date=2022-08-07 |archive-url=https://web.archive.org/web/20220807171328/https://reactjs.org/docs/refs-and-the-dom.html |url-status=live }}</ref> This process is called '''reconciliation'''. This allows the programmer to write code as if the entire page is rendered on each change, while React only renders the components that actually change. This selective rendering provides a major performance boost.<ref name="Codecademy">{{Cite web |title=React: The Virtual DOM |url=https://www.codecademy.com/articles/react-virtual-dom |access-date=2021-10-14 |website=Codecademy |language=en |archive-date=2021-10-28 |archive-url=https://web.archive.org/web/20211028172953/https://www.codecademy.com/articles/react-virtual-dom |url-status=live }}</ref><ref name="Aggarwal">{{cite web |last1=Aggarwal |first1=Sanchit |title=Modern Web-Development using ReactJS |url=https://ijrra.net/Vol5issue1/IJRRA-05-01-27.pdf |website=International Journal of Recent Research Aspects |access-date=11 December 2024 |archive-url=https://web.archive.org/web/20240417143754/https://ijrra.net/Vol5issue1/IJRRA-05-01-27.pdf |archive-date=17 April 2024 |pages=133–137 |date=March 2018 |url-status=live}}</ref>
