为了解决分页切换时页面滚动到顶部的问题

为了解决 分页切换时页面滚动到顶部 的问题（尤其是 Vue + Element Plus 表格组件中常见）

Step 1：分页前，锁住滚动位置

const lockScroll = () => {
  const scrollY = window.scrollY || document.documentElement.scrollTop;
  document.body.style.position = "fixed";
  document.body.style.top = `-${scrollY}px`;
  document.body.style.width = "100%";
  return scrollY;
};

Step 2：分页后，解锁滚动并还原位置

const unlockScroll = (scrollY: number) => {
  document.body.style.position = "";
  document.body.style.top = "";
  document.body.style.width = "";
  window.scrollTo(0, scrollY);
};

Step 3：修改你的分页调用逻辑（完整代码）

const getTabData = async () => {
  const scrollY = lockScroll(); // 锁住滚动

  const listObj = {
    ...returnQueryParams(),
    pageNumber: queryParams.pageNum,
    pageSize: queryParams.pageSize,
  };

  try {
    const {
      data: { data = [], total = 0 },
    } = await aGetlist(listObj);
    atotal.value = total;
    listData.value = data;
  } catch (error) {
    atotal.value = 0;
    listData.value = [];
  } finally {
    nextTick(() => {
      unlockScroll(scrollY); // 解锁滚动
    });
  }
};