how to use html2canvas and jspdf to export to pdf in a proper and simple way

I am currently working on a school management software that usually requires exporting of html contents that contains data tables and div tag.

I have tried all possible means to write a code that will be able to export my html data in a good way, with css preferably. After checking some question and answers here, I tried using spdf, but no luck.

It keeps destroying my table alignment, then I read about html2canvas but to implement it with jspdf was my problem, i would like to capture the content if a div tag with html2canvas then send the canvas to jspdf to export the canvas as pdf.

Here is my code below:

<script src="assets/js/pdfconvert/jspdf.js"></script>
<script src="assets/js/pdfconvert/jspdf.plugin.from_html.js"></script>
<script src="assets/js/pdfconvert/jspdf.plugin.split_text_to_size.js"></script>
<script src="assets/js/pdfconvert/jspdf.plugin.standard_fonts_metrics.js">  </script>
<script src="assets/js/pdfconvert/jspdf.plugin.addhtml.js"></script>
<script src="assets/js/pdfconvert/filesaver.js"></script>
<script src="assets/js/pdfconvert/jspdf.plugin.cell.js"></script>
<script src="assets/js/pdfconvert/html2canvas.js"></script>
<script src="assets/js/pdfconvert/jspdf.plugin.addimage.js"></script>

here is the js code

var pdf = new jsPDF('p', 'pt', 'letter');
pdf.addHTML($('#ElementYouWantToConvertToPdf')[0], function () {
pdf.save('Test.pdf');
});

Solution

I have made a jsfiddle for you.

<canvas id="canvas" width="480" height="320"></canvas> 
<button id="download">Download Pdf</button>

html2canvas($("#canvas"), {
    onrendered: function(canvas) {         
        var imgData = canvas.toDataURL(
            'image/png');              
        var doc = new jsPDF('p', 'mm');
        doc.addImage(imgData, 'PNG', 10, 10);
        doc.save('sample-file.pdf');
    }
});

jsfiddle: http://jsfiddle.net/rpaul/p4s5k59s/5/

Tested in Chrome38, IE11 and Firefox 33. Seems to have issues with Safari. However, Andrew got it working in Safari 8 on Mac OSx by switching to JPEG from PNG. For details, see his comment below.