jsPDF + html2PDF - how do I append html code to footer

Question

I know how to append my footer with text but now I need to append dynamic HTML code. I can't find anything in the documentation or in any forum.

const page_margin_left = 20;
const page_margin_right = 15;
const page_margin_bottom = 20;
const page_margin_top = 5;
html2pdf()
.set({
                                    margin: [page_margin_top, page_margin_left, page_margin_bottom, page_margin_right],
                                    filename: 'test.pdf',
                                    image: { type: 'jpeg', quality: 1 },
                                    html2canvas: { dpi: 192, scale: 2, letterRendering: true, useCORS: true },
                                    jsPDF: { unit: 'mm', format: 'a4', orientation: 'portrait' },
                                    //pageBreak: {mode: ['avoid-all', 'css'], avoid: ['.pi-row']},
                                })
                                .from(print_target_container[0].innerHTML)
                                .toPdf().get('pdf').then(function (pdf) {
                                    var totalPages = pdf.internal.getNumberOfPages();
                                    var pageHeight = pdf.internal.pageSize.height || pdf.internal.pageSize.getHeight();
                                    var pageWidth = pdf.internal.pageSize.width || pdf.internal.pageSize.getWidth();
                                    var footerText = offer_template_page_footer;

                                    for (i = 1; i <= totalPages; i++) {
                                        if (i > 1) {
                                            pdf.setPage(i);
                                            pdf.setFontSize(8);
                                            pdf.setTextColor(150);
                                            pdf.line(25, pageHeight - 15, pageWidth - page_margin_right, pageHeight - 15); // horizontal line x1, y1, x2, y2, style
                                            pdf.text(i + ' (' + totalPages + ')\n' + footerText, pageWidth / 2, pageHeight - 10, {align: 'center'});
                                            //pdf.text(i + ' (' + totalPages + ')\n' + offer_template_page_footer, pdf.internal.pageSize.getWidth() / 2, pdf.internal.pageSize.getHeight() - 8);
                                        }
                                    }
                                }).save();