This is my HTML code:
<!DOCTYPE html>
<html>
    <body>
        <p>don't print this to pdf</p>
        <div id="pdf">
            <p><font size="3" color="red">print this to pdf</font></p>
        </div>
    </body>
</html>
I want to print to pdf whatever is found in the div with an id of "pdf". The "pdf" document should then be automatically downloaded with a filename of "foobar.pdf" and  I want to submit HTML to jspdf, not text. 
Any help would be appreciated.