React Router
React Router is a standard library for routing in React applications, enabling navigation between different components or views without full page reloads. It provides declarative routing components that map URL paths to specific React components, allowing developers to build single-page applications (SPAs) with dynamic, client-side routing. It handles browser history, nested routes, and route parameters to create seamless user experiences.
Developers should learn React Router when building React-based single-page applications that require multiple views or pages, such as dashboards, e-commerce sites, or content-heavy platforms. It is essential for managing navigation state, implementing protected routes (e.g., for authentication), and optimizing performance by lazy-loading components based on routes. Use cases include creating complex applications with deep linking, breadcrumbs, and programmatic navigation.