/Javascript/React/React native countdown

React native countdown

Count down timer in react native

// isResendEnable is just my custom variable to check if i have enabled 
// resend function in my otp box
  const [timerCount, setTimer] = useState(20);
  const [activator, setActivator] = useState(Math.random());
  useEffect(() => {
    let interval;
    if (isResendEnable) {
      interval = setInterval(() => {
        if (timerCount > 0) {
          setTimer(lastTimerCount => {
            lastTimerCount <= 1 && clearInterval(interval);
            return lastTimerCount - 1;
          });
        }
      }, 1000);
    }

    return () => {
      if (isResendEnable) {
        clearInterval(interval);
      }
    };
  }, [activator]);
  
  return <Text> Resend in {timerCount} sec </Text>

React native countdown

import CountDown from 'react-native-countdown-component'; render() {    return (      <CountDown        size={30}        until={1000}        onFinish={() => alert('Finished')}        digitStyle={{backgroundColor: '#FFF', borderWidth: 2, borderColor: '#1CC625'}}        digitTxtStyle={{color: '#1CC625'}}        timeLabelStyle={{color: 'red', fontWeight: 'bold'}}        separatorStyle={{color: '#1CC625'}}        timeToShow={['H', 'M', 'S']}        timeLabels={{m: null, s: null}}        showSeparator      />    )}

-1

Source: npmjs.com

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