Vue를 사용하여 시계 카운트다운 효과를 구현하는 방법

<template>
  <div>
    <div class="countdown-clock">
      <span>{{ days }}</span> 天
      <span>{{ hours }}</span> 小时
      <span>{{ minutes }}</span> 分钟
      <span>{{ seconds }}</span> 秒
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      deadline: '2022-01-01', // 倒计时截止时间
      countdownInterval: null, // 倒计时更新的定时器
      days: 0,
      hours: 0,
      minutes: 0,
      seconds: 0,
    };
  },
  mounted() {
    this.startCountdown();
  },
  methods: {
    startCountdown() {
      this.countdownInterval = setInterval(() => {
        const now = new Date().getTime();
        const deadlineTime = new Date(this.deadline).getTime();
        const timeRemaining = deadlineTime - now;

        this.days = Math.floor(timeRemaining / (1000 * 60 * 60 * 24));
        this.hours = Math.floor(
          (timeRemaining % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)
        );
        this.minutes = Math.floor(
          (timeRemaining % (1000 * 60 * 60)) / (1000 * 60)
        );
        this.seconds = Math.floor((timeRemaining % (1000 * 60)) / 1000);

        if (timeRemaining <= 0) {
          clearInterval(this.countdownInterval);
          this.days = 0;
          this.hours = 0;
          this.minutes = 0;
          this.seconds = 0;
        }
      }, 1000);
    },
  },
  beforeDestroy() {
    clearInterval(this.countdownInterval);
  },
};
</script>

<style scoped>
.countdown-clock {
  font-size: 24px;
}
</style>

<template>
  <div>
    <h1>距离活动结束还有：</h1>
    <CountdownClock />
  </div>
</template>

<script>
import CountdownClock from '@/components/CountdownClock.vue';

export default {
  components: {
    CountdownClock,
  },
};
</script>