Description: A patch function is used to update the virtual DOM in web applications when the application state changes. This function is fundamental in the reconciliation process, where the framework compares the new state of the virtual DOM with the previous one to determine what changes are necessary in the real DOM. By doing so, it optimizes performance by minimizing direct DOM manipulations, which are costly in terms of runtime. The patch function allows the framework to apply only the necessary modifications, resulting in a smoother and faster user experience. Additionally, this function is part of the reactivity system, which enables components to automatically update in response to data changes. In summary, the patch function is a key component that allows web frameworks to efficiently manage DOM updates, thereby enhancing both efficiency and developer experience.
