如何收听子窗口关闭? [英] How to listen for child window closing?

问题描述

我正在以这种方式打开Facebook子窗口:

I am opening a child window for Facebook sharing this way:

window.open(sharingUrl,'','toolbar=0,status=0,width=626,height=436');

当用户单击共享"或关闭"时，该窗口自动关闭.

The window is automatically closed when a user clicks share or close...

是否可以向这些事件添加侦听器?

Is there a way to add a listener to these events?

推荐答案

如果在调用 window.open()时存储对子窗口的引用，则可以使用进行轮询setInterval()使用 window.closed 属性查看窗口是否仍处于打开状态.下面的示例每秒检查两次.

If you store a reference to the child window when you call window.open(), then you can poll using setInterval() to see whether the window is still open using the window.closed property. The example below checks twice per second.

var child = window.open('http://google.com','','toolbar=0,status=0,width=626,height=436');
var timer = setInterval(checkChild, 500);

function checkChild() {
    if (child.closed) {
        alert("Child window closed");   
        clearInterval(timer);
    }
}

其他注意事项:如果您曾经在子窗口中控制过html，则可以使用

Note to others: If you are ever in a situation where you have control over the html in the child window, you could make use of the onbeforeunload event and alert the parent window.

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