你能在JavaScript中触发事件在用户关闭窗口前？ [英] Can you fire an event in JavaScript before the user closes the window?

问题描述

我要发送一个ping到使用AJAX GET或POST，之后他们关闭该窗口我的服务器。 为 window.onbeforeunload 是个好主意？

I want to send a ping to my server using an AJAX GET or POST, right after they close the window. Is window.onbeforeunload a good idea?

推荐答案

是的，你可以把在 window.onbeforeunload ，但它不能保证你一个AJAX请求会得到响应的浏览器关闭，所以你只能发请求，但不依赖读取响应之前。如果你需要得到回应，你可以发送异步的同步请求代替。

Yes, you can send an AJAX request in the window.onbeforeunload but it is not guaranteed that you will get a response before the browser closes so you could only send the request but don't rely on reading a response. If you need to get a response you could send a synchronous request instead of asynchronous.

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