1 function tdEdit(element, id) {
  2     var i_a = "<input class=‘edit_td‘ type=‘text‘ style=‘height:30px; width:40px;‘ value=‘";
  3     var i_b = "‘/>";
  4     var t_a = "<textarea class=‘tarea‘ cols=‘63‘ rows=‘3‘ style=‘width:90%‘>";
  5     var t_b = "</textarea>";
  6     var td = $(element).find("td");
  7     if (td.length > 0) {
  8         var sc = $(element).children().eq(1).text();
  9         var ss = $(element).children().eq(2).text();
 10         var sequence = $(element).children().eq(3).text();
 11         var weight = $(element).children().eq(4).text();
 12         var max = $(element).children().eq(5).text();
 13         var min = $(element).children().eq(6).text();
 14         var cv = $(element).children().eq(7).text();
 15         var explain = $(element).children().eq(8).text();
 16 
 17         $(element).children().eq(1).html($(t_a + sc + t_b));
 18         $(element).children().eq(2).html($(t_a + ss + t_b));
 19         $(element).children().eq(3).html($(i_a + sequence + "‘id=‘num1" + i_b));
 20         $(element).children().eq(4).html($(i_a + weight + "‘id=‘num2" + i_b));
 21         $(element).children().eq(5).html($(i_a + max + "‘id=‘maxvalue" + i_b));
 22         $(element).children().eq(6).html($(i_a + min + "‘id=‘minvalue" + i_b));
 23         $(element).children().eq(7).html($(t_a + cv + t_b));
 24         $(element).children().eq(8).html($(t_a + explain + t_b));
 25     }
 26     $(".edit_td").click(function () {
 27         return false;
 28     });
 29     $(".tarea").click(function () {
 30         return false;
 31     });
 32     //获取焦点
 33     $(".edit_td").trigger("focus");
 34     $(".tarea").trigger("focus");
 35 
 36     //文本框失去焦点后提交内容，重新变为文本
 37     $(".save").click(function () {
 38         //验证信息"n":/^\d+$/
 39         var reg = /^[0-9]+\.{0,1}[0-9]{0,2}$/;
 40         var num1 = $("#num1").val();
 41         var num2 = $("#num2").val();
 42         var max = $("#maxvalue").val();
 43         var min = $("#minvalue").val();
 44         if (parseInt(min) > parseInt(max)) {
 45             alert("最小值不能大于最大值！");            
 46             return false;
 47         }
 48         if (!reg.test(num1) || !reg.test(num2) || !reg.test(max) || !reg.test(min)) {
 49             alert("请输入数字!");            
 50             return false;
 51         }
 52         //重新赋上新值
 53         $(".edit_td").each(function (i) {
 54             var newtxt = $(this).val();
 55             $(element).children().eq(i + 3).html(newtxt);
 56         });
 57         $(".tarea").each(function (j) {
 58             var newtarea = $(this).val();
 59             if (j < 2) {
 60                 $(element).children().eq(j + 1).html(newtarea);
 61             }
 62             else {
 63                 $(element).children().eq(j + 5).html(newtarea);
 64             }
 65         });
 66 
 67         var new_sc = $(element).children().eq(1).text();
 68         var new_ss = $(element).children().eq(2).text();
 69         var new_sequence = $(element).children().eq(3).text();
 70         var new_weight = $(element).children().eq(4).text();
 71         var new_max = $(element).children().eq(5).text();
 72         var new_min = $(element).children().eq(6).text();
 73         var new_cv = $(element).children().eq(7).text();
 74         var new_explain = $(element).children().eq(8).text();
 75         if (new_sc != sc || new_ss != ss || new_sequence != sequence || new_weight != weight || new_max != max || new_min != min || new_cv != cv || new_explain != explain) {
 76             $.ajax({
 77                 type: ‘POST‘,
 78                 contentType: ‘application/json‘,
 79                 url: ‘/Ajax/AjaxAction.ashx/UpdateRuleDetail‘,
 80                 data: ‘{id:"‘ + id + ‘",strCon:"‘ + new_sc + ‘",strStandard:"‘ + new_ss + ‘",Sequence:"‘ + new_sequence + ‘",Weight:"‘ + new_weight + ‘",CandidateValue:"‘
 81                     + new_cv + ‘",MaxValue:"‘ + new_max + ‘",MinValue:"‘ + new_min + ‘",Explain:"‘ + new_explain + ‘"}‘,
 82                 dataType: ‘json‘,
 83                 async: true,
 84                 beforeSend: function () {
 85                 },
 86                 success: function (data) {                   
 87                     alert("保存成功！");
 88                     window.location.reload();   //刷新页面               
 89                 },
 90                 error: function (XMLHttpRequest, textStatus, errorThrown) {
 91                     alert(XMLHttpRequest + ‘:‘ + textStatus);
 92                     window.location.reload();
 93                 }
 94             });
 95         }
 96         else {
 97             alert("温馨提示：您没有做任何修改！");
 98             window.location.reload();
 99         }
100         
101     });
102 }

1 <tr ondblclick="tdEdit(this,@item.ID)"></tr>