畫面單元格中有特殊字體，點擊特殊字體無法無法得到行與列序號解決方式

         function TabClick() {
             var td = event.srcElement;
             var rowId = "";
             var colId = "";
             // 點擊特殊字體時rowIndex == undefined
             if (td.parentElement.rowIndex == undefined || td.cellIndex == undefined) {
                 rowId = td.parentElement.parentElement.rowIndex;
                 colId = td.parentElement.cellIndex;
             } else {
                 rowId = td.parentElement.rowIndex;
                 colId = td.cellIndex;
             }

 

             document.getElementById("content_content_content_RowId").innerText = rowId;
             document.getElementById("content_content_content_ColId").innerText = colId;
             document.getElementById("content_content_content_GetCellDetailValue").click();

         }