我正在制定一项要求,我需要在点击按钮时将HTML文件导出为PDF。我的html文件有多个分区,我必须在将它们转换为canvas-image后将选定的分区导出为PDF。我对JsPDF和Html2canvas库有点新鲜,下面的代码适用于单一部门。请建议对此进行更改,以便将多个div导出为PDF。
<button id="btn">Generate PDF</button>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript" src="//cdn.rawgit.com/MrRio/jsPDF/master/dist/jspdf.min.js"></script>
<script type="text/javascript" src="//cdn.rawgit.com/niklasvh/html2canvas/0.5.0-alpha2/dist/html2canvas.min.js"></script>
<script type="text/javascript" >
(function(){
var
form = $('.test'),
cache_width = form.width(),
a4 =[ 595.28, 841.89]; // for a4 size paper width and height
$('#create_pdf').on('click',function(){
$('body').scrollTop(0);
createPDF();
});
//create pdf
function createPDF(){
getCanvas().then(function(canvas){
var
img = canvas.toDataURL("image/png"),
doc = new jsPDF({
unit:'px',
format:'a4'
});
doc.addImage(img, 'JPEG', 20, 20);
doc.save('techumber-html-to-pdf.pdf');
form.width(cache_width);
});
}
// create canvas object
function getCanvas(){
form.width((a4[0]*1.33333) -80).css('max-width','none');
return html2canvas(form,{
imageTimeout:2000,
removeContainer:true
});
}
}());
</script>
</body>
</html>
&#34;测试&#34;是我表单中一个div的类名,但我无法将以下代码用于多个div