在window.onbeforeunload对话框中选择拦截 [英] Intercept selection in window.onbeforeunload dialog

问题描述

在我的Web应用程序中，如果用户离开当前页面时未保存任何形式的更改，则会打开一个弹出窗口来提醒他。

in my web application if the user leaves the current page without having saved changes in the form a pop up window is opened to alert him about that.

对于弹出窗口，我使用从代码隐藏（C＃）注入的一些脚本代码：

For the pop up I use some scripts code injected from codebehind (C#):

var Confirm = true;
window.onbeforeunload = confirmClose;  
function confirmClose() 
{
   if (!Confirm) return;

   if(/*CHECK CHANGE CONDITION IS TRUE*/)
      { return " + WARN_message + "; }
} 

我需要拦截用户是否单击取消或确定按钮。

I would need to intercept whether the user click on cancel or ok button.

我尝试过：

var button_pressed = window.onbeforeunload = confirmClose;

但它始终返回true。

But it returns always true.

如何获取按下了哪个按钮？
谢谢

How can get which button was pressed? Thanks

推荐答案

不可能。没有与按钮关联的事件。
您可能能够做的是通过在onbeforeunload的页面中设置值或cookie来查看用户是否回来，并在一段时间后测试是否存在

Not possible. There is no event associated with the buttons. What you might be able to do was to see if the user came back by setting a value or perhaps a cookie in the page in the onbeforeunload and test if it is there after some time has passed

，但查看重复的如何知道用户是否在onbeforeunload对话框上单击了Java取消？

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