watchImmediate

watch 带有 {immediate: true} 的简写。

用法

类似于 watch，但带有 { immediate: true }。

import { watchImmediate } from '@vueuse/core'

const obj = ref('vue-use')

// changing the value from some external store/composables
obj.value = 'VueUse'

watchImmediate(obj, (updated) => {
  console.log(updated) // Console.log will be logged twice
})

类型声明

export declare function watchImmediate<
  T extends Readonly<WatchSource<unknown>[]>,
>(
  source: [...T],
  cb: WatchCallback<MapSources<T>, MapOldSources<T, true>>,
  options?: Omit<WatchOptions<true>, "immediate">,
): WatchStopHandle
export declare function watchImmediate<T>(
  source: WatchSource<T>,
  cb: WatchCallback<T, T | undefined>,
  options?: Omit<WatchOptions<true>, "immediate">,
): WatchStopHandle
export declare function watchImmediate<T extends object>(
  source: T,
  cb: WatchCallback<T, T | undefined>,
  options?: Omit<WatchOptions<true>, "immediate">,
): WatchStopHandle

watchIgnorable

watchOnce