⏳ useCountdown hook
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_[React][react] hook countdown timer. As seen on my [Twitch][twitch] streams._
This package is hosted on [npm][npm].
``bash`
npm install @bradgarropy/use-countdown
In any React component, import useCountdown, then call it like any other [hook][hooks]. The returned countdown value will update every second with the remaining time.
`typescript
import useCountdown from "@bradgarropy/use-countdown"
const App = () => {
const countdown = useCountdown({
minutes: 1,
seconds: 30,
format: "mm:ss",
autoStart: true,
onCompleted: () => console.log("onCompleted"),
})
console.log(countdown)
// {minutes: 1, seconds: 30, formatted: "01:30", ...}
// {minutes: 1, seconds: 29, formatted: "01:29", ...}
// {minutes: 1, seconds: 28, formatted: "01:28", ...}
// ...
// {minutes: 0, seconds: 0, formatted: "00:00", ...}
// onCompleted()
}
`
| Name | Required | Default | Example | Description |
| :------------ | :------: | :---------: | :--------: | :--------------------------------------------------- |
| minutes | false | 0 | 1 | Countdown minutes. |seconds
| | false | 0 | 30 | Countdown seconds. |format
| | false | mm:ss | mm:ss:SS | Format string ([reference][format]). |autoStart
| | false | false | true | Whether or not to automatically start the countdown. |onCompleted
| | false | undefined | function | Function to call when countdown completes. |
Starts a countdown timer based on the number of minutes and seconds provided. The returned countdown object updates once per second and stops when the timer hits zero.
The format parameter is a [date-fns][date-fns] format string.
If provided, the onCompleted function will be called when the countdown completes.
Here are some examples of how to call useCountdown.
`typescript
const countdown = useCountdown({
minutes: 1,
seconds: 30,
format: "mm:ss:SS",
autoStart: true,
onCompleted: () => console.log("onCompleted"),
})
const countdown = useCountdown({
minutes: 5,
onCompleted: () => console.log("onCompleted"),
})
const countdown = useCountdown({seconds: 10, format: "mm:ss:SS"})
`
The return object is updated every second until the countdown timer ends.
| Name | Type | Example | Description |
| :----------- | :--------: | :--------: | :------------------------------------------------------------------------ |
| minutes | number | 1 | Remaining minutes. |seconds
| | number | 30 | Remaining seconds. |formatted
| | string | 01:30 | Formatted remaining time. |isActive
| | boolean | true | Indicates that the countdown is active, either running or paused. |isInactive
| | boolean | false | Indicates that the countdown is inactive, and has finished counting down. |isRunning
| | boolean | true | Indicates that the countdown is running. |isPaused
| | boolean | false | Indicates that the countdown is paused. |pause
| | function | function | Pauses the countdown. |resume
| | function | function | Resumes the countdown. |reset
| | function | function | Resets the countdown. |
Here is an example of the returned object.
`typescript``
{
minutes: 1,
seconds: 30,
formatted: "01:30",
isActive: true,
isInactive: false,
isRunning: true,
isPaused: false,
pause: () => void,
resume: () => void,
reset: (time?: Time) => void,
}
🐛 report bugs by filing [issues][issues]
📢 provide feedback with [issues][issues] or on [twitter][twitter]
🙋🏼♂️ use my [ama][ama] or [twitter][twitter] to ask any other questions
[issues]: https://github.com/bradgarropy/use-countdown/issues
[ama]: https://bradgarropy.com/ama
[twitter]: https://twitter.com/bradgarropy
[react]: https://reactjs.org
[twitch]: https://twitch.tv/bradgarropy
[npm]: https://www.npmjs.com/package/@bradgarropy/use-countdown
[hooks]: https://reactjs.org/docs/hooks-intro.html
[bundlephobia]: https://bundlephobia.com/result?p=@bradgarropy/use-countdown
[github-actions]: https://github.com/bradgarropy/use-countdown/actions
[codecov]: https://app.codecov.io/gh/bradgarropy/use-countdown
[typescript]: https://www.typescriptlang.org/dt/search?search=%40bradgarropy%2Fuse-countdown
[contributing]: https://github.com/bradgarropy/use-countdown/blob/master/contributing.md
[contributors]: #-Contributors
[discord]: https://bradgarropy.com/discord
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[typescript-badge]: https://img.shields.io/npm/types/@bradgarropy/use-countdown?style=flat-square
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[date-fns]: https://date-fns.org
[format]: https://date-fns.org/docs/format