对表格进行排序

创建于 2024-12-03 / 26
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了解如何使用 JavaScript 对 HTML 表格进行排序。


单击按钮可根据客户名称按字母顺序对表格进行排序:

名称 Country
Berglunds snabbkop Sweden
North/South UK
Alfreds Futterkiste Germany
Koniglich Essen Germany
Magazzini Alimentari Riuniti Italy
Paris specialites France
Island Trading UK
Laughing Bacchus Winecellars Canada

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创建排序函数

实例

function sortTable() {
  var table, rows, switching, i, x, y, shouldSwitch;
  table = document.getElementById("myTable");
  switching = true;
  /* Make a loop that will continue until
  no switching has been done: */
  while (switching) {
    // Start by saying: no switching is done:
    switching = false;
    rows = table.rows;
    /* Loop through all table rows (except the
    first, which contains table headers): */
    for (i = 1; i < (rows.length - 1); i++) {
      // Start by saying there should be no switching:
      shouldSwitch = false;
      /* Get the two elements you want to compare,
      one from current row and one from the next: */
      x = rows[i].getElementsByTagName("TD")[0];
      y = rows[i + 1].getElementsByTagName("TD")[0];
      // Check if the two rows should switch place:
      if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
        // If so, mark as a switch and break the loop:
        shouldSwitch = true;
        break;
      }
    }
    if (shouldSwitch) {
      /* If a switch has been marked, make the switch
      and mark that a switch has been done: */
      rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
      switching = true;
    }
  }
}
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通过单击标题对表格进行排序

单击标题对表格进行排序。

点击 "Name" 按名称排序,点击 "Country" 按地区排序。

第一次点击,排序方向为升序(A到Z)。

再次点击,排序方向为降序(Z到A):

名称 Country
Berglunds snabbkop Sweden
North/South UK
Alfreds Futterkiste Germany
Koniglich Essen Germany
Magazzini Alimentari Riuniti Italy
Paris specialites France
Island Trading UK
Laughing Bacchus Winecellars Canada

实例

<table id="myTable2">
<tr>
<!--点击标题时,运行带参数 sortTable 函数,
0 按名称排序,1 按地区排序: -->
<th onclick="sortTable(0)">Name</th>
<th onclick="sortTable(1)">Country</th>
</tr>
...

<script>
function sortTable(n) {
  var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
  table = document.getElementById("myTable2");
  switching = true;
  // 设置排序方向为升序:
  dir = "asc";
  /* 创建一个循环,直到
  没有切换:*/
  while (switching) {
    // 首先说:没有切换:
    switching = false;
    rows = table.rows;
    /* 遍历所有表格行(除了第一行,它包含表格标题): */
    for (i = 1; i < (rows.length - 1); i++) {
      // 首先说不应该有切换:
      shouldSwitch = false;
      /* 获取要比较的两个元素,
      一个来自当前行,一个来自下一个: */
      x = rows[i].getElementsByTagName("TD")[n];
      y = rows[i + 1].getElementsByTagName("TD")[n];
      /* 检查两行是否应该交换位置,
      基于方向,asc 或 desc:*/
      if (dir == "asc") {
        if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
          // 如果是这样,标记为切换并打破循环:
          shouldSwitch = true;
          break;
        }
      } else if (dir == "desc") {
        if (x.innerHTML.toLowerCase() < y.innerHTML.toLowerCase()) {
          // 如果是这样,标记为切换并打破循环:
          shouldSwitch = true;
          break;
        }
      }
    }
    if (shouldSwitch) {
      /* 如果已标记切换,请进行切换
      并标记已完成切换: */
      rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
      switching = true;
      // 每次切换完成时,将此计数增加 1:
      switchcount ++;
    } else {
      /* 如果没有切换并且方向是 "asc",
      将方向设置为 "desc" 并再次运行 while 循环。 */
      if (switchcount == 0 && dir == "asc") {
        dir = "desc";
        switching = true;
      }
    }
  }
}
</script>
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按数字排序表

实例

if (Number(x.innerHTML) > Number(y.innerHTML)) {
  shouldSwitch = true;
  break;
}
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