Datatables ajax returns data order inconsistent with data order in table

Question

In the project, Datatables uses Ajax as the data source. When ajax returns the data, I check the data returned by ajax It was found that the order of data returned by ajax is inconsistent with the order of data displayed in the datatables table. How can I make the two display consistent?
The following is the data returned by ajax

{
    "data":    [{
            "item":    1,
            "sn":    "1",
            "bus":    "1",
            "id":    "1",
            "alise":    "Device_Alias",
            "opcode":    "3",
            "addr_start":    "1",
            "addr_len":    "1",
            "addr_mapping_head":    "0",
            "MBstatus":    0
        }, {
            "item":    1,
            "sn":    "3",
            "bus":    "1",
            "id":    "1",
            "alise":    "Device_Alias",
            "opcode":    "3",
            "addr_start":    "1",
            "addr_len":    "1",
            "addr_mapping_head":    "2",
            "MBstatus":    0
        }, {
            "item":    1,
            "sn":    "2",
            "bus":    "1",
            "id":    "1",
            "alise":    "Device_Alias2",
            "opcode":    "3",
            "addr_start":    "1",
            "addr_len":    "1",
            "addr_mapping_head":    "3",
            "MBstatus":    0
        }]
}

The following is the data in the table

According to the return of ajaxDevice_Alias2 should be at the bottom, but in the table it is in the middle.

The configuration of Datatables in the code is as follows:

var columns_en = [
        {title: "SN", data: "sn", name: "sn", orderable: false, searchable: false, visible: false},
        {title: "Item", data: "item", name: "item", orderable: true, width: "8%"},
        {title: "Serial Port", data: "bus", name: "port", orderable: true, width: "12%"},
        {title: "Slave ID", data: "id", name: "id", orderable: true, width: "10%"},
        {title: "Alias", data: "alise", name: "alias", orderable: true, width: "12%"},
        {title: "Function", data: "opcode", name: "function", orderable: true, width: "8%"},
        {title: "Data Address", data: "addr_start", name: "address", orderable: true, width: "15%"},
        {title: "Data Length", data: "addr_len", name: "length", orderable: true, width: "15%"},
        {title: "Mapping Address Head", data: "addr_mapping_head", name: "mapping", orderable: true, width: "20%"},
    ];

table = $(TableId).DataTable({
            dom: 'lBfrtip',
            buttons: [
                {
                    extend: 'collection',
                    text: i18ns['export'][lang],
                    buttons: [
                        'copy',
                        'excel',
                        'csv',
                        'pdf',
                        'print'
                    ]
                }
            ],
            autoWith: false,        //自适应宽度
            searching: true,     //过滤功能
            destroy: true,     //允许重新实例化Datatables
            processing: true,   //显示加载信息
            info: true,          //页脚信息
            paging: true,         //翻页功能
            pagingType: "full_numbers",    //显示数字的翻页样式
            lengthChange: true, //允许改变每页显示的数据条数
            pageLength: 50,      //默认每页数据条数
            lengthMenu: [[10, 20, 50, 100, -1], [10, 20, 50, 100, "All"]],//自定义每页显示的行数
            language: {
                processing: "<img src='/images/loading.gif'/><span style='color:blue; font-size:36px;'><b>Data Updating...</b></span>",
                lengthMenu: i18ns['lengthmenu'][lang],
                zeroRecords: i18ns['norecord'][lang],
                emptyTable: i18ns['norecord'][lang],
                info: "Showing _START_ to _END_ of _TOTAL_ entries",
                infoFiltered: "Have _MAX_ Records in database",
                search: i18ns['search'][lang],
                paginate: {
                    first: i18ns['firstpage'][lang],
                    previous: i18ns['prev'][lang],
                    next: i18ns['next'][lang],
                    last: i18ns['lastpage'][lang]
                }
            }, //多语言配置
            columns: columns_en,
            ajax: {
                url: DataUrl,
                dataSrc: "data",
            },
            initComplete: function () {
            },
            rowCallback: function (nRow, data, iDisplayIndex) {
                data['item'] = iDisplayIndex+1;
                $("td", nRow).eq(0).html(data["item"]);
                return nRow;
            }
        });

How should I modify it so that the order is consistent?

Answer 1

Do not specify ajax