useCountdown

useIntervalFn 的封装器，提供倒计时器。

¥Wrapper for useIntervalFn that provides a countdown timer.

示例

源代码演练场

🚀

Rocket launch in 5 seconds

Countdown:

用法

¥Usage

import { useCountdown } from '@vueuse/core'

const countdownSeconds = 5
const { remaining, start, stop, pause, resume } = useCountdown(countdownSeconds, {
  onComplete() {

  },
  onTick() {

  }
})

你可以使用 ref 来更改初始倒计时。start() 和 resume() 还接受下一次倒计时的新倒计时值。

¥You can use a ref to change the initial countdown. start() and resume() also accept a new countdown value for the next countdown.

import { shallowRef } from 'vue'
import { useCountdown } from '@vueuse/core'

const countdown = shallowRef(5)
const { start, reset } = useCountdown(countdown, {
})

// change the countdown value
countdown.value = 10

// start a new countdown with 2 seconds
start(2)

// reset the countdown to 4, but do not start it
reset(4)

// start the countdown with the current value of `countdown`
start()

类型声明

显示类型声明

export interface UseCountdownOptions {
  /**
   *  Interval for the countdown in milliseconds. Default is 1000ms.
   */
  interval?: MaybeRefOrGetter<number>
  /**
   * Callback function called when the countdown reaches 0.
   */
  onComplete?: () => void
  /**
   * Callback function called on each tick of the countdown.
   */
  onTick?: () => void
  /**
   * Start the countdown immediately
   *
   * @default false
   */
  immediate?: boolean
}
export interface UseCountdownReturn extends Pausable {
  /**
   * Current countdown value.
   */
  remaining: ShallowRef<number>
  /**
   * Resets the countdown and repeatsLeft to their initial values.
   */
  reset: (countdown?: MaybeRefOrGetter<number>) => void
  /**
   * Stops the countdown and resets its state.
   */
  stop: () => void
  /**
   * Reset the countdown and start it again.
   */
  start: (countdown?: MaybeRefOrGetter<number>) => void
}
/**
 * Wrapper for `useIntervalFn` that provides a countdown timer in seconds.
 *
 * @param initialCountdown
 * @param options
 *
 * @see https://vueuse.org/useCountdown
 */
export declare function useCountdown(
  initialCountdown: MaybeRefOrGetter<number>,
  options?: UseCountdownOptions,
): UseCountdownReturn

源代码

源代码 • 示例 • 文档

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