CODE EXAMPLE FOR JAVASCRIPT

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      />    )}