🤖 Powerful asynchronous state management, server-state utilities and data fetching for the web. TS/JS, React Query, Solid Query, Svelte Query and Vue Query.
---
id: InfiniteQueryObserver
title: InfiniteQueryObserver
## `InfiniteQueryObserver`
The `InfiniteQueryObserver` can be used to observe and switch between infinite queries.
```tsx
const observer = new InfiniteQueryObserver(queryClient, {
queryKey: ['posts'],
queryFn: fetchPosts,
getNextPageParam: (lastPage, allPages) => lastPage.nextCursor,
getPreviousPageParam: (firstPage, allPages) => firstPage.prevCursor,
})
const unsubscribe = observer.subscribe((result) => {
console.log(result)
unsubscribe()
```
**Options**
The options for the `InfiniteQueryObserver` are exactly the same as those of [`useInfiniteQuery`](../../framework/react/reference/useInfiniteQuery).
