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我正在使用以下方法获得职位：

this.fnGetPosition = function( nNode )
    {
        var oSettings = _fnSettingsFromNode( this[DataTable.ext.iApiIndex] );
        var sNodeName = nNode.nodeName.toUpperCase();

        if ( sNodeName == "TR" )
        {
            return _fnNodeToDataIndex(oSettings, nNode);
        }
        else if ( sNodeName == "TD" || sNodeName == "TH" )
        {
            var iDataIndex = _fnNodeToDataIndex( oSettings, nNode.parentNode );
            var iColumnIndex = _fnNodeToColumnIndex( oSettings, iDataIndex, nNode );
            return [ iDataIndex, _fnColumnIndexToVisible(oSettings, iColumnIndex ), iColumnIndex ];
        }
        return null;
    };

如果我单击第 0 行，iDataIndex 包含 0，而 iColumnIndex 包含我单击的任何列。但是如果我添加一个新行，比如说第 9 行，然后我单击第 0 行，iDataIndex 仍然包含 9 而不是 0，并且 iColumnIndex 返回 - 1. 添加新行时我必须关闭 bServerSide，因为如果我不这样做，单击添加新行按钮不会添加空白行，而是进行 ajax 调用。添加行后，我重新打开 bServerSide。

fnNodeToDataIndex看起来像这样：

function _fnNodeToDataIndex( oSettings, n )
    {
        return (n._DT_RowIndex!==undefined) ? n._DT_RowIndex : null;
    }

fnNodeToColumnIndex看起来像这样：

function _fnNodeToColumnIndex( oSettings, iRow, n )
    {
        var anCells = _fnGetTdNodes( oSettings, iRow );

        for ( var i=0, iLen=oSettings.aoColumns.length ; i<iLen ; i++ )
        {
            if ( anCells[i] === n )
            {
                return i;
            }
        }
        return -1;
    }

这是我想添加新行时调用的函数：

/* Add single row and display */
$.fn.dataTableExt.oApi.fnAddDataAndDisplay = function(oSettings, aData) {
/* Add the data */
var iAdded = this.oApi._fnAddData(oSettings, aData);
var nAdded = oSettings.aoData[iAdded].nTr;

/* Need to re-filter and re-sort the table to get positioning correct, not perfect
* as this will actually redraw the table on screen, but the update should be so fast (and
* possibly not alter what is already on display) that the user will not notice
*/
this.oApi._fnReDraw(oSettings);

/* Find it's position in the table */
var iPos = iAdded;

/* Get starting point, taking account of paging */
if (iPos >= 0) {
    oSettings._iDisplayStart = (Math.floor(iPos / oSettings._iDisplayLength)) * oSettings._iDisplayLength;
    this.oApi._fnCalculateEnd(oSettings);
}

this.oApi._fnDraw(oSettings);
return {
    "nTr": nAdded,
    "iPos": iAdded
};

};

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