jQuery DataTable：如果mData为null，则回调函数（fnUpdate，fnCreatedCell等）不起作用

Question

我创建了dataGrid using jQuery DataTable。但是，当mData的值为null时，我发现更新单元格有问题，如下面的代码：

var oTable = $("table#table_lookup").dataTable({
    "bLengthChange": false,
    "bFilter": false,
    "sPaginationType": "full_numbers",
    "aaData": data,
    "aoColumnDefs": [{ 
            "sTitle": "No.", 
            "mData": null,
            "aTargets": [0], 
            "bSortable": false,
            "fnCreatedCell": function (nTd, sData, oData, iRow, iCol) {
                $(nTd).text((iRow + 1));
            }],
    "bAutoWidth": false,
    "aaSorting": [[ 1, 'asc' ]]
});

任何人都可以帮我解决这个问题吗？

Answer 1

当mData为空时，您需要指定sDefaultContent选项，可将其设置为空字符串""，如：

var oTable = $("table#table_lookup").dataTable({
    "bLengthChange": false,
    "bFilter": false,
    "sPaginationType": "full_numbers",
    "aaData": data,
    "aoColumnDefs": [{ 
            "sTitle": "No.", 
            "mData": null,
            "sDefaultContent": "", //add this
            "aTargets": [0], 
            "bSortable": false,
            "fnCreatedCell": function (nTd, sData, oData, iRow, iCol) {
                $(nTd).text((iRow + 1));
            }],
    "bAutoWidth": false,
    "aaSorting": [[ 1, 'asc' ]]
});