useIsMutating
useIsMutating 是一个可选的 Hook，它返回你的应用程序正在获取的 number 个突变数量（对于应用程序范围内的加载指示器很有用）。
tsx
import { useIsMutating } from '@tanstack/react-query'
// How many mutations are fetching?
const isMutating = useIsMutating()
// How many mutations matching the posts prefix are fetching?
const isMutatingPosts = useIsMutating({ mutationKey: ['posts'] })
import { useIsMutating } from '@tanstack/react-query'
// How many mutations are fetching?
const isMutating = useIsMutating()
// How many mutations matching the posts prefix are fetching?
const isMutatingPosts = useIsMutating({ mutationKey: ['posts'] })
选项
- filters?: MutationFilters: 突变过滤器
- queryClient?: QueryClient,
- 使用此项可使用自定义的 QueryClient。否则，将使用来自最近上下文的 QueryClient。
返回值
- isMutating: number
- 将是你的应用程序当前正在获取的 number 个突变数量。
