nextjs-routing

Client-side navigation in Next.js is implemented using the `Link` component for declarative routing and the `useRouter` hook for programmatic routing. This ensures smooth transitions and efficient page updates without full reloads.

To preserve URL query parameters during Next.js navigation, use the `useRouter` hook to access current queries and pass them into `router.push()` or `router.replace()`. This maintains state like `cartId` or `locale` across transitions.

Declarative routing in Next.js uses the `Link` component for automatic prefetching on user interaction, while programmatic routing uses `router.push()` and `router.replace()` for dynamic, conditional navigation triggered by application logic.

Yes, the `useRouter` hook supports conditional navigation by executing `router.push()` or `router.replace()` based on dynamic application state, allowing seamless multi-step processes like guided checkouts.

Use `router.push` to add a new entry to the browser history stack, allowing users to use the back button, and `router.replace` to update the current URL without leaving history traces, ideal for URL state updates.