DataTables の行スパン実装アイデアの例の詳細な説明

<table id="example" class="display table table-bordered" cellspacing="0" width="600" style="margin-top: 50px"><thead><tr><th>Name</th><th>Position</th><th>Age</th></tr></thead></table>

 var dataSet = [
        [ "Tiger Nixon",  "Edinburgh",20,1  ],
        [ "Garrett Winters", "Tokyo",22,2],
        [ "Ashton Cox", "Tokyo",21,0 ]
            ];

    $('#example').DataTable({
        data: dataSet,
        paging: true,
        searching:false, //搜索栏lengthChange : false, //是否允许改变每页显示的数据条数ordering:false,
        columnDefs: [{
            targets: 1,
            createdCell: function (td, cellData, rowData, row, col) {var rowspan = rowData[3];if (rowspan > 1) {
                    $(td).attr('rowspan', rowspan)
                }if (rowspan == 0) {
                    $(td).remove();
                }
            }
        }]
    });