watchAtMost

類別

Watch

匯出大小

339 B

上次變更

5 天前

watch 搭配觸發次數。

用法

類似於 watch，具有額外選項 count，用於設定回呼函式觸發的次數。達到次數後，偵聽將自動停止。

import { watchAtMost } from '@vueuse/core'

watchAtMost(
  source,
  () => { console.log('trigger!') }, // triggered it at most 3 times
  {
    count: 3, // the number of times triggered
  },
)

類型宣告

typescript

export interface WatchAtMostOptions<Immediate>
  extends WatchWithFilterOptions<Immediate> {
  count: MaybeRefOrGetter<number>
}
export interface WatchAtMostReturn {
  stop: WatchStopHandle
  count: ShallowRef<number>
}
export declare function watchAtMost<
  T extends Readonly<WatchSource<unknown>[]>,
  Immediate extends Readonly<boolean> = false,
>(
  sources: [...T],
  cb: WatchCallback<MapSources<T>, MapOldSources<T, Immediate>>,
  options: WatchAtMostOptions<Immediate>,
): WatchAtMostReturn
export declare function watchAtMost<
  T,
  Immediate extends Readonly<boolean> = false,
>(
  sources: WatchSource<T>,
  cb: WatchCallback<T, Immediate extends true ? T | undefined : T>,
  options: WatchAtMostOptions<Immediate>,
): WatchAtMostReturn