调用window.print（）时会触发什么事件？ [英] What event is fired when window.print() is called?

问题描述

我正在努力解决这个问题，今晚我的成功很少。如果我只知道在调用 window.print（）函数时触发了什么事件，我想我可以使下面的代码工作。

I am trying to work through this question and I have had little success tonight. I think I can make the code below work if I only knew what event was fired when the window.print() function is called.

var browser_name = navigator.appName; 

if(browser_name == 'Microsoft Internet Explorer'){
     window.attachEvent("print()",on_print_function);//I realize I cannot attach an event listener to a function, I just wanted you to see what I am trying to accomplish
}

else{
     window.addEventListener("print()",on_print_function,false);
}

打印时调用的函数事件发生返回一个页面，该页面存储数据库中的一些信息。

The function that is called when the print event takes place returns a page that stores some info in the database.

我的最终目标是，如果相关信息是将存储在数据库中。 我愿意接受更好的方法解决这个问题，但我认为如果我能够获得 print（）的事件，我会好的。 。

My end objective is to have the page print ONLY if the info in question is going to be stored in the database. I am open to better ways of tackling this, but I think I will have it going ok if I can just get the event for the print() as I said.

编辑

我放弃了这个现在，我已经采取了另一种做我想做的方式。我期待着FireFox支持 onbeforeprint（）和 onafterprint（）的那一天。

I am giving up on this for now, I have settled with another way of doing what I want. I look forward to the day when FireFox supports onbeforeprint() and onafterprint().

推荐答案

据我所知，IE有几个事件行onbeforeprint（）和onafterprint（）但是其他浏览器不支持它们。所以依靠这个并不是很好。

Well as far as I know, IE has several events line onbeforeprint() and onafterprint() but they are not supported by other browsers. So relying on this is not very good.

也许你的页面上有一个打印按钮。附加一个处理程序，它执行对服务器的ajax调用以将数据存储到数据库，并且在此调用成功时，调用窗口上的print（）。

Perhaps you can have a print button on your page. Attach to it a handler which executes the ajax call to the server to store the data to the database and on success of this call, call the print() on the window.

那是你在找什么？

这篇关于调用window.print（）时会触发什么事件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！