有个小bug，懒得修了。
目的：增加一行的时候，td第一列排序。
删除一行的时候，td第一列排序
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <script src="../bower_components/jquery/dist/jquery.js"></script> 5 </head> 6 7 <style> 8 div { 9 width: 300px; 10 height:300px; 11 border: 1px solid red; 12 background-color: grey; 13 } 14 15 #myTable { 16 width: 100px; 17 height:100px; 18 border: 1px solid red; 19 } 20 21 #myTable tr, #myTable td { 22 border: 1px solid red; 23 } 24 </style> 25 26 <script> 27 var arr = []; 28 $(document).ready(function() { 29 $(‘input[type="button"]‘).click(function() { 30 var len = $(‘#myTable tr‘).length; 31 var temp = (len === 1) ? ‘A‘ : $(‘#myTable tr:last td:first‘).html(); 32 var next = String.fromCharCode(parseInt(temp.charCodeAt() + 1)); 33 var sign = temp.charCodeAt() || ‘hyy‘; 34 var _obj = new Obj(next, sign); 35 var _temp = ‘<tr><td>‘ + _obj.sort + ‘</td><td>‘ + _obj.sign + ‘</td><td>‘ + _obj.del + ‘</td></tr>‘ 36 arr.push(_obj); 37 $(‘#myTable‘).append(_temp); 38 39 $(‘#myTable tr:last a ‘).on(‘click‘, function() { 40 $(this).parent().parent().remove(); 41 var temp = $(this).parent().parent().find(‘td:first‘).html(); 42 var _index = parseInt(temp.charCodeAt() - 65); 43 arr.splice(_index, 1); 44 sortTable(); 45 }); 46 47 sortTable(); 48 49 }); 50 }); 51 52 function Obj(sort, sign) { 53 this.sort = sort; 54 this.sign = sign; 55 this.del = ‘<a>删除</a>‘; 56 } 57 58 function sortTable() { 59 $.each($(‘#myTable tr‘).not(‘:first‘), function(index, value, full) { 60 var temp = String.fromCharCode(65 + index); 61 $(this).find(‘td:first‘).html(temp); 62 if(arr[index] && arr[index]["sort"]) { 63 arr[index]["sort"] = temp; 64 } 65 }) 66 } 67 68 </script> 69 70 <body> 71 <div> 72 <table id="myTable" > 73 <tr > 74 <td>TEST</td> 75 </tr> 76 </table> 77 </div> 78 <input type="button" value="ADD" /> 79 </body> 80 </html>
原文：http://www.cnblogs.com/maduar/p/5327512.html