编写一段vue3的五一假期倒计时

好的，以下是一段简单的Vue3组件代码，用于实现五一假期倒计时：

<template>
  <div>
    <h2>距离五一假期还有：</h2>
    <div class="countdown">
      <div>{{ days }}</div>
      <span>天</span>
      <div>{{ hours }}</div>
      <span>小时</span>
      <div>{{ minutes }}</div>
      <span>分钟</span>
      <div>{{ seconds }}</div>
      <span>秒</span>
    </div>
  </div>
</template>

<script>
import { ref } from 'vue';

export default {
  setup() {
    const countdownDate = new Date('2022-05-01');
    const days = ref(0);
    const hours = ref(0);
    const minutes = ref(0);
    const seconds = ref(0);

    const updateCountdown = () => {
      const now = new Date().getTime();
      const distance = countdownDate - now;
      days.value = Math.floor(distance / (1000 * 60 * 60 * 24));
      hours.value = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
      minutes.value = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
      seconds.value = Math.floor((distance % (1000 * 60)) / 1000);
    };

    setInterval(updateCountdown, 1000);

    return {
      days,
      hours,
      minutes,
      seconds,
    };
  },
};
</script>

该组件使用了Vue3的Composition API，通过`ref`函数创建了四个响应式变量：`days`、`hours`、`minutes`和`seconds`，并使用`setInterval`函数每秒更新一次倒计时。在模板中，这些变量被渲染为四个数字，并带有相应的文本标签。