在数据表 pdf 导出中添加序列号列

Question

i want to export my data table to PDF report.

buttons: [
        {
          extend: "excel",
          footer: true,
          title: "my report",
          exportOptions: {
            columns: [1, 2, 3, 4],
          },
        },
        {
          extend: "pdf",
          footer: true,
          title: "my report",
          exportOptions: {
            columns: [1, 2, 3, 4],
          },
        },
      ]

the exported pdf is shown below.

is there any method to add serial number at first column in my PDF report can any one help?

Answer 1

your can custom fields in datatable on export to pdf or excel through below code.

buttons: [
        {
          extend: "excel",
          footer: true,
          title: "my report",
          exportOptions: {
            columns: [1, 2, 3, 4],
          },
        },
        {
          extend: "pdf",
          footer: true,
          title: "my report",
          exportOptions: {
            columns: [1, 2, 3, 4],
          },
          customize: function (doc) {
            var col = doc.content[1].table.body;
            for (i = 1; i < col.length; i++) {
              col[i][0]["text"] = i;
            }
          },
        },
      ]