TCPDF return to previous page after print dialog close

问题

I am using TCPDF to generate documents for an online application. I want the user to return to the form after print because the user will capture data again.

I have tried opening the pdf in a new tab / window and calling window.close() after print, but to use window.close() the form must open using window.open() which is not the case. Form action opens the window.

I have then tried to open the form in the same tab and calling history.back(), but also not working (by not working I refer to the page remains on the pdf.

Code I have tried (amongst many other)

$js = <<<EOD
window.print();
document.location.href = 'http://www.google.com';
EOD;

and

$js = <<<EOD
window.print();
 window.history.back();
EOD;

and

$js = <<<EOD
window.print();
 history.go(-1);
EOD;

and

$js = <<<EOD
window.print();
window.addEventListener("afterprint", "window.history.back();");
EOD;

This code works when not in TCPDF:

<script type="text/javascript" 
src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

<script type="text/javascript">
$(document).ready(function() {
window.print();
window.onafterprint = function(){
window.history.go(-1);
}
});
</script>

This must work in TCPDF

Any suggestions?

回答1:

The problem is that if you load a PDF file directly, then that page does not have JS running on it, so you can not close it with JS

The best solution I can suggest is to use ViewerJS, which a PDF reader written in JS, so you can still run code at the same time as displaying the document.

来源：https://stackoverflow.com/questions/59186544/tcpdf-return-to-previous-page-after-print-dialog-close

标签

javascript

tcpdf