使用render( data, type, row, meta )的參數meta

直接新加一個列

columns: [
            {data: "id", title: "id", visible: false, searchable: false},
            {data: null, tile: "序號", visible: true, searchable: false},
            {data: "name", title: "名稱", visible: true, searchable: false},
            {data: 
 
"createTime", title: "創建時間", visible: true, searchable: false},
            {data: null, title: "操作", visible: true, searchable: false} //序號為-1
        ],

然後columnDefs中使用meta.row

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

然後就可以裏

同樣，meta.col是獲取列號

dataTable添加序號列