from / fromEvent

RxJS from() 和 fromEvent() 的包裝器，使其可以接受 ref。可在 @vueuse/rxjs 附加元件中使用。

用法

分類

@RxJS

匯出大小

122 B

套件

@vueuse/rxjs

上次變更

5 天前

TypeScript

import { from, fromEvent, toObserver, useSubscription } from '@vueuse/rxjs'
import { interval } from 'rxjs'
import { map, mapTo, takeUntil, withLatestFrom } from 'rxjs/operators'
import { shallowRef } from 'vue'

const count = shallowRef(0)
const button = shallowRef<HTMLButtonElement | null>(null)

useSubscription(
  interval(1000)
    .pipe(
      mapTo(1),
      takeUntil(fromEvent(button, 'click')),
      withLatestFrom(from(count, {
        immediate: true,
        deep: false,
      })),
      map(([curr, total]) => curr + total),
    )
    .subscribe(toObserver(count)), // same as ).subscribe(val => (count.value = val))
)

import { from, fromEvent, toObserver, useSubscription } from '@vueuse/rxjs'
import { interval } from 'rxjs'
import { map, mapTo, takeUntil, withLatestFrom } from 'rxjs/operators'
import { shallowRef } from 'vue'
const count = shallowRef(0)
const button = shallowRef(null)
useSubscription(
  interval(1000)
    .pipe(
      mapTo(1),
      takeUntil(fromEvent(button, 'click')),
      withLatestFrom(
        from(count, {
          immediate: true,
          deep: false,
        }),
      ),
      map(([curr, total]) => curr + total),
    )
    .subscribe(toObserver(count)),
)

類型宣告

typescript

export declare function from<T>(
  value: ObservableInput<T> | Ref<T>,
  watchOptions?: WatchOptions,
): Observable<T>
export declare function fromEvent<T extends HTMLElement>(
  value: MaybeRef<T>,
  event: string,
): Observable<Event>