jsPDF html method always fails

Answer 1

The problem is most likely the version of html2canvas you used. html2canvas 0.4.1 is not going to work. It should be html2canvas 1.0.0-alpha.11 or higher. However, current version, html2canvas 1.0.0-rc.3 doesn't work either, it also gives me a blank page. At least html2canvas 1.0.0-alpha.12 still works for me.

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.debug.js" 
        integrity="sha384-NaWTHo/8YCBYJ59830LTz/P4aQZK1sS0SneOgAvhsIl3zBu8r9RevNg5lHCHAuQ/"
        crossorigin="anonymous"></script>
<script src="~/lib/html2canvas/html2canvas.min.js"></script>
<!-- html2canvas 1.0.0-alpha.11 or html2canvas 1.0.0-alpha.12 is needed -->
<script>
    function download() {
        let pdf = new jsPDF('p', 'pt', 'a4');

        pdf.html(document.getElementById('toPDF'), {
            callback: function () {
                window.open(pdf.output('bloburl'));
            }
        });
    }
</script>

Update: the latest version that works for me is html2canvas v1.0.0-rc.1