33

When user click on GeneratePDF button, I need to export the html page into a PDF file. I am successfully exporting HTML page into PDF file but for the first click only I am able to download data into PDF but from the second click I am unable to download the data to PDF file. I am not sure where I went wrong in the code.

Please check the code here: 

$(function() {
  var doc = new jsPDF();
  var specialElementHandlers = {
    '#editor': function(element, renderer) {
      return true;
    }
  };
  $('#cmd').click(function() {
    doc.fromHTML($('#target').html(), 15, 15, {
      'width': 170,
      'elementHandlers': specialElementHandlers
    });
    doc.save('sample-file.pdf');
  });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript" src="https://code.jquery.com/ui/1.12.0-beta.1/jquery-ui.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.1.135/jspdf.min.js"></script>
<script type="text/javascript" src="http://cdn.uriit.ru/jsPDF/libs/adler32cs.js/adler32cs.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2014-11-29/FileSaver.min.js
"></script>
<script type="text/javascript" src="libs/Blob.js/BlobBuilder.js"></script>
<script type="text/javascript" src="http://cdn.immex1.com/js/jspdf/plugins/jspdf.plugin.addimage.js"></script>
<script type="text/javascript" src="http://cdn.immex1.com/js/jspdf/plugins/jspdf.plugin.standard_fonts_metrics.js"></script>
<script type="text/javascript" src="http://cdn.immex1.com/js/jspdf/plugins/jspdf.plugin.split_text_to_size.js"></script>
<script type="text/javascript" src="http://cdn.immex1.com/js/jspdf/plugins/jspdf.plugin.from_html.js"></script>
<script type="text/javascript" src="js/basic.js"></script>

<body id="target">
  <div id="content">
    <h3>Hello, this is a H3 tag</h3>
    <a class="upload">Upload to Imgur</a> 
    <h2>this is <b>bold</b> <span style="color:red">red</span></h2> 
    <p>Feedback form with screenshot This script allows you to create feedback forms which include a screenshot, created on the clients browser, along with the form. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation
      as it does not make an actual screenshot, but builds the screenshot based on the information available on the page. How does it work? The script is based on the html2canvas library, which renders the current page as a canvas image, by reading the
      DOM and the different styles applied to the elements. This script adds the options for the user to draw elements on top of that image, such as mark points of interest on the image along with the feedback they send. It does not require any rendering
      from the server, as the whole image is created on the clients browser. No plugins, no flash, no interaction needed from the server, just pure JavaScript! Browser compatibility Firefox 3.5+ Newer versions of Google Chrome, Safari & Opera IE9
    </p>

  </div>
  <button id="cmd">generate PDF</button>
</body>

</html>

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4
  • maybe stackoverflow.com/questions/18191893/… ? Commented Nov 5, 2013 at 10:16
  • No i tried with it.. its not working Commented Nov 5, 2013 at 10:22
  • I've rolled the question back as you simply incorporated Kristof answer, making the answer lose its meaning. That's not ok, when you have new questions, ask a new one, don't mutate the original question if it already has answers. Thanks! Commented Sep 20, 2014 at 7:25
  • hey it is working for you in IE9? Commented Mar 5, 2015 at 17:53

1 Answer 1

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32

This is because you define your "doc" variable outside of your click event. The first time you click the button the doc variable contains a new jsPDF object. But when you click for a second time, this variable can't be used in the same way anymore. As it is already defined and used the previous time.

change it to:

$(function () {

    var specialElementHandlers = {
        '#editor': function (element,renderer) {
            return true;
        }
    };
 $('#cmd').click(function () {
        var doc = new jsPDF();
        doc.fromHTML(
            $('#target').html(), 15, 15, 
            { 'width': 170, 'elementHandlers': specialElementHandlers }, 
            function(){ doc.save('sample-file.pdf'); }
        );

    });  
});

and it will work.

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14 Comments

Thank you Kristof Feys, but when I click on the button I can see 2 windows. one is save to PDF window and one more new window is opening with pdf view, How can I remove PDf view in new window...
Hmmm... when i tested this in jsFiddle i only received the "save to pdf" window. My guess would be that these 2 windows are browser / plugin related...
Yes, In jsFiddle it is getting only SaveTo PDF window, but in Main Application It is getting one more window opened when user click,How can i remove that new window.
As I am unable to reproduce your issue, i can't really debug it either. You could probably try to remove all your javascript plugins used (except jquery & jspdf) and see if it works then. Afterwards you can re add them one by one to see which one produces the error (if my guess is correct and one of these are producing the issue of course) ... Or if you could reproduce the issue on jsFiddle that could help as well :)
$(document).ready(function) and $(function) are identical; learn.jquery.com/using-jquery-core/document-ready just says, "If you are writing code that people who aren't experienced with jQuery may see, it's best to use the long form."
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