watchAtMost

类别

Watch

导出体积

339 B

上次更改

3 weeks ago

watch 监听器带有触发次数限制。

使用方法

类似于 watch，但多了一个选项 count，用于设置回调函数触发的次数。达到次数后，监听将自动停止。

import { watchAtMost } from '@vueuse/core'

watchAtMost(
  source,
  () => { console.log('触发!') }, // 最多触发 3 次
  {
    count: 3, // 触发次数
  },
)

类型声明

typescript

export interface WatchAtMostOptions<Immediate>
  extends WatchWithFilterOptions<Immediate> {
  count: MaybeRefOrGetter<number>
}
export interface WatchAtMostReturn {
  stop: WatchStopHandle
  count: Ref<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