เปลี่ยนชื่อ ไฟล์ Excel ของ javascript แนะนำทีครับ พี่ ๆ น้อง ๆ

function CustomMethodToExport(tblId)
{
    var html ;
    var numofRows ;
       
    var gTable = document.getElementById(tblId);
    numofRows = gTable.rows.length-1;
    var numofCells ;
    var trhtml = "";
    numofCells =  gTable.rows[0].cells.length-1  ;
    for ( r = 0; r <= numofRows; r++)
    {
        var c =0;
        var tdhtml =  "" ;
        for (c = 0; c<=numofCells; c++)
        {
            var tempstr = gTable.rows[r].cells[c].innerText  ;
            var color = "" ;
            var isPercent = ""
            if(tempstr.search("%") > 0)
            {
                if(tempstr.search('-') >= 0)
                {
                    color = "red";

                }
                else
                {
                    color = "green";
                      
                }
            }
            else
            {
                color = "black";
            }
            tdhtml = tdhtml + "<td style='text-align:center;color:"+ color +";'>" +  gTable.rows[r].cells[c].innerText.replace("&nbsp;")  + "</td>";
               
        }
        trhtml = trhtml + "<tr>" + tdhtml + "</tr>";
    }
    html = "<table border='1'>"+trhtml+"</table>";
       
    // MS OFFICE 2003  : data:application/vnd.ms-excel
    // MS OFFICE 2007  : application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
    
    window.open('data:application/vnd.ms-excel,'+ encodeURIComponent(html));
    
}