Is it possible to render PDF (fPDF) via a javascript?

So, I'm passing some values via jQuery to the server, which generates PDF garble. It goes something like this:

$.post('/admin/printBatch',
data, // Some vars and such
function(data){
    if(data) {

        var batch =  window.open('','Batch Print','width=600,height=600,location=_newtab');
        var html = data; // Perhaps some header info here?!
        batch.document.open();
 开发者_如何学JAVA       batch.document.write(html);
        batch.document.close();

        $( this ).dialog( "close" ); // jQuery UI
    } else {
        alert("Something went wrong, dawg.");
    }
    return false;
});

The output file looks roughly like so:

$pdf->AddPage(null, null, 'A PDF Page');
//....
$pdf->Output('', 'I'); // 'I' sends the file inline to the browser (http://fpdf.org/en/doc/output.htm)

What gets rendered to the browser window:

%PDF-1.3 3 0 obj <> endobj 4 0 obj <> stream ...

I'm missing something major, I just know it... thoughts?

Thanks, guys.

By the looks of things, the PDF is reasonably well formed. As such, I suspect you simply need to set the appropriate content header when you're outputting the PDF via PHP using the header function:

header('Content-type: application/pdf');

N.B.: This must be the first output from the PHP - it won't work if there's preceding HTML, blank space, etc.

In an ideal world, you'd also set the content length, etc. via...

header('Content-Length: '.filesize($pathToYourPDF));

...or...

header('Content-Length: '.strlen($pdfData));

...if you're generating the PDF programmatically.

UPDATE

To clarify, I suspect you'll need to change your window.open to read the above directly from a PHP served URL for the above to work. (Not quite sure why you're not just doing this in the first place, but I guess there's a good reason.)

I would rather set URL for the popup window, pointing to the php script that outputs PDF.

If you absolutely have to do it this way, data-uri might help:

var batch =  window.open(
                    'data:application/pdf,'+encodeURIComponent(data),
                    'Batch Print',
                    'width=600,height=600,location=_newtab'
             );

but I have not tested it, and even if it works in normal browsers, in IE it is sure to fail.

I have tested this for my application and my conclusion is that you must use an iframe (where show_pdf returns "$pdf->Output('', 'I');"):

$.ajax({
 url: "http://www.somesite.com/documents/generatePDF",
 success: function(){
  $('#theDocument').html('<iframe id="some_id" class="some_pdf" style="display:none" src="http://www.somesite.com/documents/show_pdf" width="100%" height="450" scrollbar="yes" marginwidth="0" marginheight="0" hspace="0" align="middle" frameborder="0" scrolling="yes" style="width:100%; border:0;  height:450px; overflow:auto;"></iframe>');
 }
});
$('#dialog-document').dialog('open');

This worked for me: Change

$pdf->Output('', 'I');

for

$return = $pdf->Output('name.pdf', 'S');
$return = base64_encode();
$return = 'data:application/pdf;base64,'.$return;
echo json_encode($return);

now, you should, in your javascript file, get the return and open a new window

success: function( data ) {
    var pdf = JSON.parse(data);
    window.open(pdf);
}

It will open a new tab on your browser with the pdf.