JavaScript 实现表格单列按字母排序

 1 <!DOCTYPE HTML>
 2 <html>
 3  <head>
 4    <meta charset="utf-8">
 5    <title></title>
 6   </head> 
 7 
 8 <body>
 9   
10  
11 
12 <p>点击按钮,表格 name 字段按字母排序:</p>
13 <p><button onclick="sortTable()">排序</button></p>
14 
15 <table border="1" id="myTable">
16   <tr>
17     <th>Name</th>
18     <th>Country</th>
19   </tr>
20   <tr>
21     <td>Berglunds snabbkop</td>
22     <td>Sweden</td>
23   </tr>
24   <tr>
25     <td>North/South</td>
26     <td>UK</td>
27   </tr>
28   
29   <tr>
30     <td>Alfreds Futterkiste</td>
31     
32     <td>Germany</td>
33   </tr>
34   <tr>
35     <td>Koniglich Essen</td>
36     <td>Germany</td>
37   </tr>
38   <tr>
39     <td>Magazzini Alimentari Riuniti</td>
40     <td>Italy</td>
41   </tr>
42   <tr>
43     <td>Paris specialites</td>
44     <td>France</td>
45   </tr>
46   <tr>
47     <td>Island Trading</td>
48     <td>UK</td>
49   </tr>
50   <tr>
51     <td>Laughing Bacchus Winecellars</td>
52     <td>Canada</td>
53   </tr>
54 </table>
55 <script>
56   function sortTable() {
57   var table, rows, sw, i, x, y, jh;
58   table = document.getElementById("myTable");
59   sw = true;
60   //循环是否完成
61   while (sw) {
62     //完成了就不循环了
63     sw = false;
64     //获取行
65     rows = table.getElementsByTagName("TR");
66     //循环获得每个单元格的内容
67     for (i = 1; i < (rows.length - 1); i++) {
68       //默认不交换
69       jh = false;
70       
71       x = rows[i].getElementsByTagName("TD")[0].innerHTML.toLowerCase();
72       y = rows[i + 1].getElementsByTagName("TD")[0].innerHTML.toLowerCase();
73       //比较两个单元格的内容
74       if (x > y) {
75         //如果正确肯定要交换位子
76         jh= true;
77         break;
78       }
79     }
80     if (jh) {
81       //互换一下位子
82       rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
83       sw = true;
84     }
85   }
86 }
87   
88 </script>
89 </body>
90  </html>

 

posted @ 2019-01-18 11:28  给自己一个梦  阅读(791)  评论(0编辑  收藏  举报