延迟页面关闭Javascript？ [英] Delay page close with Javascript?

问题描述

现在，我知道延迟页面关闭是不好的做法，并且有更好的方法来处理这类内容，但仅供将来参考，有没有办法延迟页面关闭？类似

Now, I understand that it's bad practice to delay a page close, and that there are better ways to handle that kind of stuff, but just for future reference, is there a way to delay the page closing? Something like

window.onunload = unload();

function unload()
{
setTimeout("self.close()", 1000)
}

谢谢！

推荐答案

如果你真的需要（即。准备采用半黑客）延迟关闭页面而不显示确认对话框等，您可以执行以下操作：

If you really need (ie. ready to resort to semi-hacks) to delay the page closing without showing a confirmation dialog, etc, you can do something like the following:

function delay(ms) {
    var start = +new Date;
    while ((+new Date - start) < ms);
}

// start image loading (I assume you need this for tracking?)
delay(150);

警告很明显：它不会一直有效，你不能拖延太久。话虽这么说，如果你真的对此感兴趣，你可能会得到超过95％的结果（实际上取决于服务器的响应时间）。

The caveats are obvious: it will not always work and you cannot delay for too long. That being said, if you are really interested in this, you can probably get results of over 95% (really depends on the server response time).

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