dataTable add serial number column

Use the parameter meta of render( data, type, row, meta )

Add a new column directly

columns: [
            {data: "id", title: "id", visible: false, searchable: false},
            {data: null, tile: "序号", visible: true, searchable: false},
            {data: "name", title: "名称", visible: true, searchable: false},
            {data: "createTime", title: "创建时间", visible: true, searchable: false},
            {data: null , title: "Operation", visible: true , searchable: false } // The serial number is -1 
        ],

Then use meta.row in columnDefs

columnDefs: [
            {
                targets: 1,
                render: function (data, type, row, meta) {
                    return meta.row+1
                }
            }
        ],

Then you can

Similarly, meta.col is to get the column number