tav-ui/es/packages/components/count-down/src/useCountdown2.mjs

Tav UI

import { ref, unref } from 'vue';
import { tryOnUnmounted } from '@vueuse/core';

function useCountdown(count) {
  const currentCount = ref(count);
  const isStart = ref(false);
  let timerId;
  function clear() {
    timerId && window.clearInterval(timerId);
  }
  function stop() {
    isStart.value = false;
    clear();
    timerId = null;
  }
  function start() {
    if (unref(isStart) || !!timerId) {
      return;
    }
    isStart.value = true;
    timerId = setInterval(() => {
      if (unref(currentCount) === 1) {
        stop();
        currentCount.value = count;
      } else {
        currentCount.value -= 1;
      }
    }, 1e3);
  }
  function reset() {
    currentCount.value = count;
    stop();
  }
  function restart() {
    reset();
    start();
  }
  tryOnUnmounted(() => {
    reset();
  });
  return { start, reset, restart, clear, stop, currentCount, isStart };
}

export { useCountdown };
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