下面红色部分正是关键：

 这些都是同一个JS页面的代码：

//初始化表格function initTable() {    $('#test').datagrid({        title: '学生作业列表',        iconCls: 'icon-user',        loadMsg: '数据加载中...',        nowrap: true,        autoRowHeight: true,        striped: true,        url: '/CorrectHomeWork/GetAllHomeWork',        sortName: 'ID',        sortOrder: 'asc',        border: true,        remoteSort: false,        idField: 'ID',        pageSize: 10,        pagination: true,        rownumbers: true,        columns: [[            { field: 'ck', checkbox: true },            { field: 'ID', title: 'ID', width: 50, sortable: true },            { field: 'S_Number', title: '学号', width: 100, sortable: true },            { field: 'HW_Url', title: "作业名", width: 150, sortable: true },            {                field: 'HW_SubmitDate', title: '初次提交时间', width: 150,                formatter: function (value, row, index) {                    return changeDateFormat(value);                }            },            {                field: 'HW_UpdataDate', title: '再次提交时间', width: 150,                formatter: function (value, row, index) {                    return changeDateFormat(value);                }            },                        {                field: 'RegistrationTime', title: "注册时间", width: 150, sortable: true,                formatter: function (value, row, index) {                    //return (eval(value.replace(/\/Date\((\d+)\)\//gi, "new Date($1)"))).pattern("yyyy-M-d h:m:s");                }            },            { field: 'UserRoleId', title: "权限", width: 150, sortable: true },            {                field: 'Enable', title: '是否启用', width: 80, formatter: function (val, rowdata, index) {                    if (val) {                        return '' + val + '';                    } else {                        return '' + val + '';                    }                }            }        ]],        onLoadSuccess: function () {            $(".grid_Enable").linkbutton({ text: '启用', plain: true, iconCls: 'icon-ok' });            $(".grid_unEnable").linkbutton({ text: '禁止', plain: true, iconCls: 'icon-no' });        },        toolbar: [{            id: 'btnadd',            text: '添加用户',            iconCls: 'icon-add',            handler: function () {                AddUserDialog();            }        }, '-', {            id: 'btnedit',            text: '修改用户',            iconCls: 'icon-edit',            handler: function () {                UpdateUserDialog();            }        }, '-', {            id: 'btncut',            text: '删除用户',            iconCls: 'icon-cut',            handler: function () {                DeleteUser();            }        }, '-', {            id: 'btnrefresh',            text: '刷新',            iconCls: 'icon-reload',            handler: function () {                initTable();            }        }]    });}

 

//转换日期格式 

function changeDateFormat(cellval) {

if (cellval != null) {

var date = new Date(parseInt(cellval.replace("/Date(", "").replace(")/", ""), 10));

var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;

var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();

var currentHours = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();

var currentMinutes = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();

var currentSeconds = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();

return date.getFullYear() + "-" + month + "-" + currentDate + " "+" " + currentHours + ":" + currentMinutes + ":" + currentSeconds;

}

}