捕获(不同)打印/取消打印按钮事件(单击)

本文介绍了捕获(不同)打印/取消打印按钮事件(单击)的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

如何才能仅捕获打印页面中的取消事件?

How can I capture only the cancel event from the print page?

我有一个页面，单击按钮后，您会打开一个新选项卡，其中加载了打印内容，如果您单击取消"(不是打印)，则必须调用一个方法.打印相同.

I have a page that on a button click you have a new tab opened with print loaded, there if you click cancel (not print) I have to call a method. Same for print.

如果要打印，则要执行PrintSuccesfully()，如果要取消打印，我要执行PrintCancelled().

In case of print a want to execute PrintSuccesfully(), if Cancel print I want to execute PrintCancelled().

打开新标签的代码:

var windowObject = window.open('', '_blank'); windowObject.document.write(generatePrintHTMLBody(scope)); windowObject.document.close(); windowObject.focus(); windowObject.print(); windowObject.close();

我在beforeprint和onafterprint上进行了查找，但是都使用matchMedia，在CTRL + P事件上或在单击打印/取消"按钮时在我的代码上执行.

I looked up onbeforeprint and onafterprint, but both are executed with matchMedia, on CTRL+P event or on my code at Print / Cancel button click.

我测试的代码包含在这里:

(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; }());

推荐答案

经过大量研究，您似乎无法执行此操作……每个浏览器上按钮的行为不同，或者具有相同的签名，因此没有解决方案存在.

After a lot of research it seems you cannot do this... The behaviour si diferent for the buttons on each browser or it has the same signature, so no resolution exists.