How to add page header with addHTML ? about jspdf-autotable HOT 4 CLOSED

        var totalPagesExp = "{total_pages_count_string}";
    var doc = new jsPDF('p', 'pt');

    var htmlHeader = $(".report-container header")[0];

    var header = function (docPage, pageCount, options) {

        docPage.addHTML(htmlHeader, null, function(){

            console.log("adding header");

        });
    };

    var footer = function (doc, lastCellPos, pageCount, options) {
    var str = "Page " + pageCount;
        // Total page number plugin only available in jspdf v1.0+
        if (typeof doc.putTotalPages === 'function') {
            str = str + " of " + totalPagesExp;
        }
        doc.text(str, options.margins.horizontal, doc.internal.pageSize.height - 30);
    };
    var options = {renderHeader: header, renderFooter: footer, margins: {horizontal: 40, top: 80, bottom: 50}};


    doc.autoTable(columns, data, options);

    // Total page number plugin only available in jspdf v1.0+
    if (typeof doc.putTotalPages === 'function') {
         doc.putTotalPages(totalPagesExp);
    }

    console.log("saving pdf");

         doc.save('table.pdf');

var pdf = new jsPDF('p','pt','a4');
pdf.addHTML(document.body,function() {
    pdf.save('web.pdf');
});