您可以使用 createdRow()检查详细信息单元格(或多个单元格)的内容，并在该单元格不为空的情况下有条件地添加 details-control 类.

You can use createdRow() to check the content of the detail cell (or cells), and conditionally add the details-control class if that cell is not empty.

例如，它检查 extn 字段是否具有非空值

For example, this checks to see if the extn field has a non-empty value

$(document).ready(function() {
  var table = $('#example').DataTable({
    "data": data.data,
    "columns": [{
      "orderable": false,
      "data": null,
      "defaultContent": ''
    }, {
      "data": "name"
    }, {
      "data": "position"
    }, {
      "data": "office"
    }, {
      "data": "salary"
    }],
    "order": [
      [1, 'asc']
    ],
    "createdRow": function(row, data, dataIndex) {
      if (data.extn !== "") {
      $(row).find("td:eq(0)").addClass('details-control');
      }
    }
  });

这里是小提琴演示: https://jsfiddle.net/zephyr_hex/rhgL0294/20/