浏览器如何或有可能跟踪弹出窗口 [英] How does or is it possible for a browser keep track of a pop up window

问题描述

我注意到，在使用Google Mail的Google Chat功能时，您可以在其自己的窗口中弹出聊天窗口。然后，当我关闭Google Mail窗口时，它警告说，如果我继续并显示窗口列表，则其他窗口也将被关闭。这是如何完成的？是否有可能跟踪你调用的窗口是否已关闭？

I noticed when using the Google Chat feature from your Google Mail that you can pop out a chat into its' own window. Then when I went to close the Google Mail window it warned that other windows would also be closed if I continued and then showed a list of the windows. How is this done? Is it possible to track whether a window you invoked has been closed?

推荐答案

是的，当你在JavaScript中执行window.open ，你可以将它设置为一个var：

Yes, when you do a window.open in JavaScript, you can set it to a var like:

myWindow = window.open(...)

然后，您可以将事件绑定到该窗口，如：

Then you could bind events to that window like:

myWindow.onUnload = funcWindowClosed;

您可以通过将多个弹出窗口放入数组中来跟踪多个弹出窗口。

You could keep track of multiple pop-up windows by putting them into an array.

您也可以使用以下方式在子窗口（弹出窗口）中调用父窗口中的JavaScript函数：

You can also call JavaScript functions in the parent window by the child (pop-up) window using:

window.opener

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