Package Exports

@rooks/use-countdown

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@rooks/use-countdown) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

@rooks/use-countdown

Count down to a target timestamp and call callbacks every second (or provided peried)

Installation

npm install --save @rooks/use-countdown

Importing the hook

import useCountdown from "@rooks/use-countdown"

Usage

const endTime = new Date(Date.now() + 10000);

function Demo() {
  const count = useCountdown(endTime, {
    interval: 1000,
    onDown: time => console.log('onDown', time),
    onEnd: time => console.log('onEnd', time),
  });
  return count;
}

render(<Demo/>)

Arguments

Argument	Type	Description	Default value
endTime	Date	the time when the countdown should end	undefined
options.interval	number	milliseconds that it takes count down once	1000
options.onDown	function	(time) => {}, callback that would be called every interval	undefined
options.onEnd	function	(time) => {}, callback that would be called when the countdown ends	undefined

Return Value

Type	Description
number	rest amount of intervals it takes to count down to the endTime