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React Router Explained: How SPAs Handle Navigation Without Page Refresh

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React Router is a library that enables navigation between components in React Single Page Applications by intercepting URL changes instead of triggering full browser reloads. Core tools like BrowserRouter, Routes, Route, and Link allow developers to map URL paths to specific React components. The useNavigate hook supports programmatic navigation, such as redirecting users after a successful login or form submission. Dynamic URL parameters handled via useParams let applications render content based on values embedded in the URL, like a user ID or account number. Nested routes combined with the Outlet component allow complex layouts where parent and child components render together based on the current URL structure.

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