Created
September 26, 2020 17:24
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| /** | |
| * set interval react hook | |
| */ | |
| import React, { useState, useEffect, useRef } from 'react'; | |
| function useInterval(callback, delay) { | |
| const savedCallback = useRef(); | |
| // Remember the latest callback. | |
| useEffect(() => { | |
| savedCallback.current = callback; | |
| }); | |
| // Set up the interval. | |
| useEffect(() => { | |
| function tick() { | |
| savedCallback.current(); | |
| } | |
| if (delay !== null) { | |
| let id = setInterval(tick, delay); | |
| return () => clearInterval(id); | |
| } | |
| }, [delay]); | |
| } |
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