snapshot of https://github.com/TanStack/query.git (main, 2026-09-16; blobs > 131072B omitted)

docs/framework/svelte/reference/functions/useIsFetching.md

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+---
+id: useIsFetching
+title: useIsFetching
+---
+
+```ts
+function useIsFetching(filters?, queryClient?): ReactiveValue<number>;
+```
+
+Defined in: [packages/svelte-query/src/useIsFetching.svelte.ts:40](https://github.com/TanStack/query/blob/main/packages/svelte-query/src/useIsFetching.svelte.ts#L40)
+
+## Parameters
+
+### filters?
+
+[`QueryFilters`](../interfaces/QueryFilters.md)\<readonly `unknown`[]\>
+
+[QueryFilters](../interfaces/QueryFilters.md) to narrow down which queries to count. Omit to count every fetching
+query.
+
+### queryClient?
+
+[`QueryClient`](../classes/QueryClient.md)
+
+Use this to use a custom `QueryClient`. Otherwise, the one from the nearest context will
+be used.
+
+## Returns
+
+`ReactiveValue`\<`number`\>
+
+A reactive value — read `.current` to get how many matching queries are currently fetching.
+
+## Examples
+
+```svelte
+<script lang="ts">
+  import { useIsFetching } from '@tanstack/svelte-query'
+
+  // How many queries matching the posts prefix are fetching?
+  const isFetchingPosts = useIsFetching({ queryKey: ['posts'] })
+</script>
+
+{#if isFetchingPosts.current}
+  <span>Refreshing posts...</span>
+{/if}
+```
+
+A global loading indicator for any query fetching in the background, not just the ones on screen:
+```svelte
+<script lang="ts">
+  import { useIsFetching } from '@tanstack/svelte-query'
+
+  const isFetching = useIsFetching()
+</script>
+
+{#if isFetching.current}
+  <div>Queries are fetching in the background...</div>
+{/if}
+```