[javascript] How to detect window.print() finish

In my application, I tried to print out a voucher page for the user like this:

  var htm ="<div>Voucher Details</div>";
  $('#divprint').html(htm);
  window.setTimeout('window.print()',2000);

'divprint' is a div in my page which store information about the voucher.

It works, and the print page pops up. But I want to advance the application once the user clicks 'print' or 'close' in the browser's pop-up print dialog.

For example, I'd like to redirect user to another page after pop up window is closed:

window.application.directtoantherpage();//a function which direct user to other page

How can I determine when the pop up print window is closed or print is finished?

window.print behaves synchronously on chrome .. try this in your console

window.print();
console.log("printed");

"printed" doesn't display unless the print dialog is closed(canceled/saved/printed) by the user.

Here is a more detailed explanation about this issue.

I am not sure about IE or Firefox will check and update that later

It works for me with $(window).focus().

var w;
var src = 'http://pagetoprint';
if (/chrom(e|ium)/.test(navigator.userAgent.toLowerCase())) {
    w = $('<iframe></iframe>');
    w.attr('src', src);
    w.css('display', 'none');
    $('body').append(w);
    w.load(function() {
        w[0].focus();
        w[0].contentWindow.print();
    });
    $(window).focus(function() {
        console.log('After print');
    });
}
else {
    w = window.open(src);
    $(w).unload(function() {
        console.log('After print');
    });
}

Given that you wish to wait for the print dialog to go away I would use focus binding on the window.

print();

var handler = function(){
    //unbind task();
    $(window).unbind("focus",handler);
}

$(window).bind("focus",handler);

By putting in the unbind in the handler function we prevent the focus event staying bond to the window.

compatible with chrome, firefox, opera, Internet Explorer
Note: jQuery required.

<script>

    window.onafterprint = function(e){
        $(window).off('mousemove', window.onafterprint);
        console.log('Print Dialog Closed..');
    };

    window.print();

    setTimeout(function(){
        $(window).one('mousemove', window.onafterprint);
    }, 1);

</script>

See https://stackoverflow.com/a/15662720/687315. As a workaround, you can listen for the afterPrint event on the window (Firefox and IE) and listen for mouse movement on the document (indicating that the user has closed the print dialog and returned to the page) after the window.mediaMatch API indicates that the media no longer matches "print" (Firefox and Chrome).

Keep in mind that the user may or may not have actually printed the document. Also, if you call window.print() too often in Chrome, the user may not have even been prompted to print.

This Actually worked for me in chrome. I was pretty suprised.

jQuery(document).bind("keyup keydown", function(e){
    if(e.ctrlKey && e.keyCode == 80){
         Print(); e.preventDefault();
    }
});

Where Print is a function I wrote that calls window.print(); It also works as a pure blocker if you disable Print();

As noted here by user3017502

window.print() will pause so you can add an onPrintFinish or onPrintBegin like this

function Print(){
    onPrintBegin
    window.print();
    onPrintFinish(); 
}

Print in new window with w = window.open(url, '_blank') and try w.focus();w.close(); and detect when page is closed. Works in all browsers.

w = window.open(url, '_blank');
w.onunload = function(){
 console.log('closed!');
}
w.focus();
w.print();
w.close();

Window close after finish print.

It is difficult, due to different browser behavior after print. Desktop Chrome handles the print dialogue internally, so doesn't shift focus after print, however, afterprint event works fine here (As of now, 81.0). On the other hand, Chrome on mobile device and most of the other browsers shifts focus after print and afterprint event doesn't work consistently here. Mouse movement event doesn't work on mobile devices.

So, Detect if it is Desktop Chrome, If Yes, use afterprint event. If No, use focus based detection. You can also use mouse movement event(Works in desktop only) in combination of these, to cover more browsers and more scenarios.

I think the window focus approach is the correct one. Here is an example in which I wanted to open a PDF url blob in a hidden iframe and print it. After printed or canceled, I wanted to remove the iframe.

/**
 * printBlob will create if not exists an iframe to load
 * the pdf. Once the window is loaded, the PDF is printed.
 * It then creates a one-time event to remove the iframe from
 * the window.
 * @param {string} src Blob or any printable url.
 */
export const printBlob = (src) => {
  if (typeof window === 'undefined') {
    throw new Error('You cannot print url without defined window.');
  }
  const iframeId = 'pdf-print-iframe';
  let iframe = document.getElementById(iframeId);
  if (!iframe) {
    iframe = document.createElement('iframe');
    iframe.setAttribute('id', iframeId);
    iframe.setAttribute('style', 'position:absolute;left:-9999px');
    document.body.append(iframe);
  }
  iframe.setAttribute('src', src);
  iframe.addEventListener('load', () => {
    iframe.contentWindow.focus();
    iframe.contentWindow.print();
    const infanticide = () => {
      iframe.parentElement.removeChild(iframe);
      window.removeEventListener('focus', infanticide);
    }
    window.addEventListener('focus', infanticide);
  });
};

Implementing window.onbeforeprint and window.onafterprint

The window.close() call after the window.print() is not working in Chrome v 78.0.3904.70

To approach this I'm using Adam's answer with a simple modification:

     function print() {
    (function () {
       let afterPrintCounter = !!window.chrome ? 0 : 1;
       let beforePrintCounter = !!window.chrome ? 0 : 1;
       var beforePrint = function () {
          beforePrintCounter++;
          if (beforePrintCounter === 2) {
             console.log('Functionality to run before printing.');
          }
       };
       var afterPrint = function () {
          afterPrintCounter++;
          if (afterPrintCounter === 2) {
             console.log('Functionality to run after printing.');
             //window.close();
          }
       };
       if (window.matchMedia) {
          var mediaQueryList = window.matchMedia('print');
          mediaQueryList.addListener(function (mql) {
             if (mql.matches) {
                beforePrint();
             } else {
                afterPrint();
             }
          });
       }
       window.onbeforeprint = beforePrint;
       window.onafterprint = afterPrint;
    }());
    //window.print(); //To print the page when it is loaded
 }

I'm calling it in here:

<body onload="print();">

This works for me. Note that I use a counter for both functions, so that I can handle this event in different browsers (fires twice in Chrome, and one time in Mozilla). For detecting the browser you can refer to this answer

you can't really know if the user clicked the print of cancel button because they both fire the same event onafterprint or afterprint which I think is very stupid, why not differentiating between the two events ??

You can detect when window.print() is finished simply by putting it in another function

//function to call if you want to print
var onPrintFinished=function(printed){console.log("do something...");}

//print command
onPrintFinished(window.print());

tested in Firefox,Google chrome,IE

On chrome (V.35.0.1916.153 m) Try this:

function loadPrint() {
    window.print();
    setTimeout(function () { window.close(); }, 100);
}

Works great for me. It will close window after user finished working on printing dialog.

Tested IE, FF, Chrome and works in all.

    setTimeout(function () { window.print(); }, 500);
    window.onfocus = function () { setTimeout(function () { window.close(); }, 500); }