var table = $('#example').DataTable({
  columns: [
    { data: 'id' },
    { 
      data: null,
      render: function(data, type, row) {
        // 动态返回数据
        return row.first_name + ' ' + row.last_name;
      }
    },
    { data: 'position' },
    { data: 'office' }
  ]
});

// 动态更新数据源
table.columns(1).dataSrc('custom_field');

var table = $('#example').DataTable({
  data: yourData,
  columns: [
    { title: "ID", data: "id" },
    { title: "Name", data: "name" },
    { title: "Position", data: "position" }
  ],
  columnDefs: [{
    targets: 1, // 第二列
    render: function(data, type, row, meta) {
      // 动态决定显示内容
      if (row.department === 'IT') {
        return '<strong>' + data + '</strong>';
      }
      return data;
    }
  }]
});

function getDynamicData(row, columnIndex) {
  // 根据行数据和列索引返回不同内容
  switch(columnIndex) {
    case 1: return row.first_name + ' ' + row.last_name;
    case 2: return row.position + ' (' + row.department + ')';
    default: return row[table.column(columnIndex).dataSrc()];
  }
}

var table = $('#example').DataTable({
  columns: [
    { data: 'id' },
    { 
      data: null,
      render: function(data, type, row, meta) {
        return getDynamicData(row, meta.col);
      }
    },
    { 
      data: null,
      render: function(data, type, row, meta) {
        return getDynamicData(row, meta.col);
      }
    }
  ]
});

table.columns(1).dataSrc('new_field');
table.draw();

render: function(data, type, row) {
  if (type === 'display') {
    return formatForDisplay(row);
  }
  return data; // 返回原始数据用于排序和搜索
}