easyui 合并单元格

$(function () {
        $('#datalist').datagrid({
            title: '三项岗位人员统计',
            iconCls: 'icon-save',
            singleSelect: true,
             700,
            height: 350,
            nowrap: false,
            fit: true,
            striped: false,
            url: '/Provider/HandlerQualificationsP.ashx?method=threet&dept_id=000001',
            remoteSort: false,
            idField: 'DicQualificationID',
           
            columns: [[
                   { field: 'title1', title: '资格证名称',  120, align: 'center' },
                   { field: 'title2', title: '资格证名称',  120, align: 'center' },
                   { field: 'zgzname', title: '资格证名称',  120, align: 'center' },
                   { field: 'rowdata1', title: '资格证名称',  120, align: 'center' }
				]],
           
            rownumbers: true,
            onLoadSuccess: function (rowData) {

                var merges2 = [{
                    field:'title1',
                    index: 0,
                    colspan: 2,
                    rowspan: 2
                },
                { 
                    index: 2,
                    field: 'title1',
                    rowspan:4
                },
                  {
                    index: 7,
                    field: 'title1',
                    rowspan:9
                },
                {
                    index: 2,
                    field: 'title2',
                    rowspan: 2
                },
                {
                    index: 4,
                    field: 'title2',
                    rowspan: 2
                }
                ];


                    for (var i = 0; i < merges2.length; i++)
                        $('#datalist').datagrid('mergeCells', {
                            index: merges2[i].index,
                            field: merges2[i].field,
                            colspan: merges2[i].colspan,
                            rowspan: merges2[i].rowspan
                        });
 
            },
            toolbar: [{
                id: 'btnadd',
                text: '添加',
                iconCls: 'icon-add',
                handler: function () {
                    DicAdd()
                }
            }, '-', {
                id: 'btncut',
                text: '修改',
                iconCls: 'icon-cut',
                handler: function () {
                    DicEdit()
                }
            }, '-', {
                id: 'btnsave',
                text: '删除',

                iconCls: 'icon-remove',
                handler: function () {
                    delData();
                }
            }]
        });

    });