how to detect window.print() finish

问题:

In my application, I tried to print out a voucher page for user, I used:

  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 further proceed the application once user click 'print' or 'close' the pop up window.

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 to determine the pop up print window is closed or print is finished?

回答1:

In FireFox and Internet Explorer you can listen for the after print event.

https://developer.mozilla.org/en-US/docs/Web/API/window.onafterprint

window.onafterprint = function(){
   console.log("Printing completed...");
}

It may be possible to use window.matchMedia to get this functiionality in other browsers.

(function() {

    var beforePrint = function() {
        console.log('Functionality to run before printing.');
    };

    var afterPrint = function() {
        console.log('Functionality to run after printing');
    };

    if (window.matchMedia) {
        var mediaQueryList = window.matchMedia('print');
        mediaQueryList.addListener(function(mql) {
            if (mql.matches) {
                beforePrint();
            } else {
                afterPrint();
            }
        });
    }

    window.onbeforeprint = beforePrint;
    window.onafterprint = afterPrint;

}());

Source: http://tjvantoll.com/2012/06/15/detecting-print-requests-with-javascript/

回答2:

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.

回答3:

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>

回答4:

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

回答5:

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.

回答6:

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.

回答7:

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(); 
}

回答8:

Tested IE, FF, Chrome and works in all.

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

回答9:

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.

回答10:

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

回答11:

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);
  });
};

回答12:

On Chrome 41.0.. I have to put this

I print automatically on load page:

<body style="background-color:white;" onload="print_window();">

JS:

function print_window(){
  window.print();
  setTimeout(function () { 
    window.open('', '_self', '');
    window.close();
  }, 100);
}

It works too for IE 10