vue3监听滚轮高度事件

// 标题
onMounted(() => {
  // 监听滚动条位置
  window.addEventListener("scroll", scrollTop, true);
});
//实时滚动条高度
const scrollTop = () => {
  let scroll = document.documentElement.scrollTop || document.body.scrollTop;
  //这里是我的一些判断
if (scroll > 0) {
    typefo.value = scroll;
    shows.value = true;
    showss.value = false;
  } else {
    typefo.value = scroll;
    shows.value = false;
    showss.value = true;
  }
};