JQUERYchecked赋值没用，显示的都有勾，怎么让他根据判断来显示勾

Question

$.each(ckeckout, function (i, o) {
                        var a = "";
                        if (o.State == 0) {
                            a = "false";
                        }
                        else if (o.State == 1) {
                            a = "true";
                        }
                        alert(a);
                        var trs = $('<tr>\
                                    <td ><input type="checkbox" checked="'+ a + '" /></td>\
                                    <td name="Stream_no" ><div style="width: 200px;">' + (o.Stream_no || "&nbsp;") + '</td>\
                                    <td name="OrderDesk_id" ><div style="width: 200px;">' + (o.OrderDesk_id || "&nbsp;") + '</td>\
                                    <td name="Times" ><div style="width: 200px;">' + (o.Times || "&nbsp;") + '</td>\
                                    <td name="Food_name" ><div style="width: 200px;">' + (o.Food_name || "&nbsp;") + '</td>\
                  </tr>\
                                  ');
                        tbody.append(trs);

Answer 1

$.each(ckeckout, function (i, o) {
                        var a = "";
                        if (o.State == 0) {
                            a = "false";
                        }
                        else if (o.State == 1) {
                            a = "true";
                        }
                        alert(a);
                        var trs = $('<tr>\
                                    <td ><input type="checkbox" checked="'+ a + '" /></td>\
                                    <td name="Stream_no" ><div style="width: 200px;">' + (o.Stream_no || "&nbsp;") + '</td>\
                                    <td name="OrderDesk_id" ><div style="width: 200px;">' + (o.OrderDesk_id || "&nbsp;") + '</td>\
                                    <td name="Times" ><div style="width: 200px;">' + (o.Times || "&nbsp;") + '</td>\
                                    <td name="Food_name" ><div style="width: 200px;">' + (o.Food_name || "&nbsp;") + '</td>\
                  </tr>\
                                  ');
                        tbody.append(trs);

Answer 2

$.each(ckeckout, function (i, o) {
                        var a = "";
                        if (o.State == 0) {
                            a = "false";
                        }
                        else if (o.State == 1) {
                            a = "true";
                        }
                        alert(a);
                        var trs = $('<tr>\
                                    <td ><input type="checkbox" checked="'+ a + '" /></td>\
                                    <td name="Stream_no" ><div style="width: 200px;">' + (o.Stream_no || "&nbsp;") + '</td>\
                                    <td name="OrderDesk_id" ><div style="width: 200px;">' + (o.OrderDesk_id || "&nbsp;") + '</td>\
                                    <td name="Times" ><div style="width: 200px;">' + (o.Times || "&nbsp;") + '</td>\
                                    <td name="Food_name" ><div style="width: 200px;">' + (o.Food_name || "&nbsp;") + '</td>\
                  </tr>\
                                  ');
                        tbody.append(trs);

Answer 3

attr("checked",true);
这样勾 。
你现在出现什么问题了 。

Answer 4

再不行就用alert($("#").html());
弹出下就知道哪里出了问题了 。 

Answer 5

!$("#控件名字").attr("checked")
这样就能判断选择没选择了
看看是不是名字写错了 还是JQ没调用

Answer 6

<td ><input type="checkbox" checked="'+ a + '" /></td>\
这样赋值为什么不行啊，我是循环控制的只能一个个赋值。

Answer 7

我试了下，只要有checked这个属性，那个就是勾选的。你可以试下。

Answer 8

 $.each(ckeckout, function (i, o) {
                        var a = "";
                        if (o.State == 0) {
                            var trs = $('<tr>\
                                    <td ><input type="checkbox"  /></td>\
                                    <td name="Stream_no" ><div style="width: 200px;">' + (o.Stream_no || "&nbsp;") + '</td>\
                                    <td name="OrderDesk_id" ><div style="width: 200px;">' + (o.OrderDesk_id || "&nbsp;") + '</td>\
                                    <td name="Times" ><div style="width: 200px;">' + (o.Times || "&nbsp;") + '</td>\
                                    <td name="Food_name" ><div style="width: 200px;">' + (o.Food_name || "&nbsp;") + '</td>\
                  </tr>\
                                  ');
                            tbody.append(trs);
                        }
                        else if (o.State == 1) {
                            var trs = $('<tr>\
                                    <td ><input type="checkbox" checked="a"/></td>\
                                    <td name="Stream_no" ><div style="width: 200px;">' + (o.Stream_no || "&nbsp;") + '</td>\
                                    <td name="OrderDesk_id" ><div style="width: 200px;">' + (o.OrderDesk_id || "&nbsp;") + '</td>\
                                    <td name="Times" ><div style="width: 200px;">' + (o.Times || "&nbsp;") + '</td>\
                                    <td name="Food_name" ><div style="width: 200px;">' + (o.Food_name || "&nbsp;") + '</td>\
                  </tr>\
                                  ');
                            tbody.append(trs);
                        }
多谢8楼让我想到了解决的办法！！