Append Existing Pdf to Jspdf - pdf

Question

I am using the jspdf library to create a pdf and its working out great. I am now trying to append to that pdf another existing pdf. At the moment when my user clicks the download button it fires off two separate downloads. I was thinking that a work around might be creating two images and adding them to my pdf created with Jspdf. Has anyone appended an existing pdf to a pdf generated using jspdf?
$(document).ready(function () {
var doc = new jsPDF('p', 'pt', 'letter');
var imgData = 'cats.jpg'
var specialElementHandlers = {
'#content': function (element, renderer) {
return true;
}
};
$('#cmd').click(function () {
doc.addImage(imgData, 'JPEG', 0, 250, 615, 200);
doc.fromHTML($('#content').get(0), 0, 0, {
'elementHandlers': specialElementHandlers
});
doc.save('TemporaryIdCard.pdf');
});
});

Answer 1

I ended up hacking an answer from here.
Not thrilled about it but it works. I created images from the content in the PDF I was trying to append and then added each as a page to my doc
var doc = new jsPDF('p', 'pt', 'letter');
var imgData = 'cats.jpeg';
var imgData2 = 'dogs.jpeg';
var imgData3 = 'kittens.jpeg';
var specialElementHandlers = {
'#content': function (element, renderer) {
return true;
}
};
var pageHeight = doc.internal.pageSize.height;
var y = 800;
var x = 800;
$('#cmd').click(function () {
doc.addImage(imgData, 'JPEG', 0, 250, 615, 200);
doc.fromHTML($('#content').get(0), 0, 0, {
'elementHandlers': specialElementHandlers
});
if (y >= pageHeight) {
doc.addPage();
doc.addImage(imgData3, 'JPEG', 45, 45, 500, 550);
y = 0;
}
if (x >= pageHeight) {
doc.addPage();
doc.addImage(imgData2, 'JPEG', 50, 70, 500, 500);
x = 0;
}
doc.save('TemporaryIdCard.pdf');
});