How does React Router work under the hood?
It maps URL paths to components. When the URL matches a route, the corresponding component renders. It uses the browser History API to update the URL and listen for changes, which makes the back and forward buttons work.
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More FAQs in What Is React Router and How Does Client-Side Routing Work?
React Router is a library that lets you navigate between different views in a React app without a full page reload. It keeps the URL in sync with what is shown by mapping URL paths to components.
In server-side routing, every link triggers a full page reload from the server. In client-side routing, JavaScript intercepts navigation, updates the URL, and swaps the view without reloading the page, which makes transitions instant.
Because the browser does not re-download HTML, CSS, and JS on every navigation. JavaScript just swaps the view and updates the URL, so transitions are instant and component state can be preserved.
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