get CSV from HTML in javascript

exportcsv.js

function exportTableToCSV($table, filename) {
                var $headers = $table.find('tr:has(th)')
                    ,$rows = $table.find('tr:has(td)')

                    // Temporary delimiter characters unlikely to be typed by keyboard
                    // This is to avoid accidentally splitting the actual contents
                    ,tmpColDelim = String.fromCharCode(11) // vertical tab character
                    ,tmpRowDelim = String.fromCharCode(0) // null character

                    // actual delimiter characters for CSV format
                    ,colDelim = '","'
                    ,rowDelim = '"\r\n"';

                // Grab text from table into CSV formatted string
                var csv = '"';
                csv += formatRows($headers.map(grabRow));
                csv += rowDelim;
                csv += formatRows($rows.map(grabRow)) + '"';

                // Data URI
                var csvData = 'data:application/csv;charset=utf-8,' + encodeURIComponent(csv);

                // For IE (tested 10+)
                if (window.navigator.msSaveOrOpenBlob) {
                    var blob = new Blob([decodeURIComponent(encodeURI(csv))], {
                        type: "text/csv;charset=utf-8;"
                    });
                    navigator.msSaveBlob(blob, filename);
                } else {
                    $(this)
                        .attr({
                            'download': filename
                            ,'href': csvData
                            //,'target' : '_blank' //if you want it to open in a new window
                        });
                }

                //------------------------------------------------------------
                // Helper Functions
                //------------------------------------------------------------
                // Format the output so it has the appropriate delimiters
                function formatRows(rows){
                    return rows.get().join(tmpRowDelim)
                        .split(tmpRowDelim).join(rowDelim)
                        .split(tmpColDelim).join(colDelim);
                }
                // Grab and format a row from the table
                function grabRow(i,row){

                    var $row = $(row);
                    //for some reason $cols = $row.find('td') || $row.find('th') won't work...
                    var $cols = $row.find('td');
                    if(!$cols.length) $cols = $row.find('th');

                    return $cols.map(grabCol)
                        .get().join(tmpColDelim);
                }
                // Grab and format a column from the table
                function grabCol(j,col){
                    var $col = $(col),
                        $text = $col.text();

                    return $text.replace('"', '""'); // escape double quotes

                }
            }
            $("#export").click(function() {
                exportTableToCSV.apply(this, [$("#incentive-report"), "Incentive Report - "+ (new Date()).getDate() + '-'+ (new Date()).getMonth()+ '-'+(new Date()).getYear()+'.csv']);
            });