Dingdong_client/components/CountDown .js

import * as React from 'react';
import { useThrottleFn } from '@umijs/hooks';
import { Text } from 'react-native-magnus';
import Time from '../Utils/TimeUtils';

export default function CountDown(props) {
  const { endTime, format, size, color, valueFormat } = props;
  const [value, setValue] = React.useState(
    new Time(endTime, format).getNowTime(valueFormat)
  );
  const { run } = useThrottleFn(() => {
    setValue(new Time(endTime, format).getNowTime(valueFormat));
    setTimeout(() => {
      run();
    }, 500);
  }, 1000);
  run();
  return (
    <Text fontSize={size} color={color}>
      {value}
    </Text>
  );
}