$(function() {
var specialElementHandlers = {
    '#editor': function(element, renderer) {
        return true;
    }
};

$('#printButton').click(function() {
    var doc = new jsPDF();
    doc.fromHTML($('#main-container').html(), 15, 15, {
        'width': 170,
        'elementHandlers': specialElementHandlers
    });
    doc.output("dataurlnewwindow");

   });
});

Add these scripts in the code

<script src="js/pdf.js"></script>
<script src="js/pdf.worker.js"></script>