🤖 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: QueryObserver
title: QueryObserver
The `QueryObserver` can be used to observe and switch between queries.
```tsx
const observer = new QueryObserver(queryClient, { queryKey: ['posts'] })
const unsubscribe = observer.subscribe((result) => {
console.log(result)
unsubscribe()
})
```
**Options**
The options for the `QueryObserver` are exactly the same as those of [`useQuery`](../framework/react/reference/useQuery).
