const tableRows = document.querySelectorAll('.table-row');
// 设置每页显示的条数
const itemsPerPage = 10;
// 获取上一页和下一页按钮元素
const prevBtn = document.getElementById('prev-btn');
const nextBtn = document.getElementById('next-btn');

let currentPage = 1;   // 当前页数，默认为第一页

// 显示当前页码的函数
function displayCurrentPage() {
  const currentPageEl = document.getElementById('current-page');
  currentPageEl.innerHTML = currentPage;
}

// 隐藏所有行元素
function hideRows() {
  tableRows.forEach(row => {
    row.style.display = 'none';
  });
}

// 根据当前页码显示对应的行元素
function displayRows() {
  const startIndex = (currentPage - 1) * itemsPerPage;
  const endIndex = startIndex + itemsPerPage;
  
  for (let i = startIndex; i < endIndex; i++) {
    const row = tableRows[i];
    if (row) {
      row.style.display = '';
    }
  }
}

// 更新翻页按钮状态
function updatePaginationButtons() {
  if (currentPage === 1) {
    prevBtn.disabled = true;
  } else {
    prevBtn.disabled = false;
  }
  
  if (currentPage === Math.ceil(tableRows.length / itemsPerPage)) {
    nextBtn.disabled = true;
  } else {
    nextBtn.disabled = false;
  }
}

// 上一页按钮点击事件处理程序
prevBtn.addEventListener('click', () => {
  if (currentPage > 1) {
    currentPage--;
    hideRows();
    displayRows();
    updatePaginationButtons();
    displayCurrentPage();
  }
});

// 下一页按钮点击事件处理程序
nextBtn.addEventListener('click', () => {
  if (currentPage < Math.ceil(tableRows.length / itemsPerPage)) {
    currentPage++;
    hideRows();
    displayRows();
    updatePaginationButtons();
    displayCurrentPage();
  }
});

// 页面加载完成时显示第一页内容
hideRows();
displayRows();
updatePaginationButtons();
displayCurrentPage();