checkbox-html 结合 php，如何easyui的datagrid进行多行修改数据？

    <table id="dg">                <thead>                                <form id="fm">                                                <tr>                                                            <th field="ck" checkbox="true"></th>                                                            <th field="name" width="50">姓名</th>                                                            <th field="profit" width="50">昨日收益</th>                                                </tr>                              </form>                </thead>  </table>    <script type="text/javascript">        var url;        function edit(){            var ids = [];            var row = $('#dg').datagrid('getSelections');                        for(var i = 0; i<row.length;i++){                                    var rows = row[i];                                    ids.push(rows);                        }                url = '../php/everyday.php?o=edit&uid='+row.uid;        $('#fm').form('submit',{               url: url,               onSubmit: function(){                   return $(this).form('validate');               },               success: function(result){                   $('#dg').datagrid('reload');               }            });                             }    </script>