问题描述
我正在尝试在用户离开我的网页时发布数据。我终于找到了一个可行的解决方案，但是，当用户离开时，它会显示一个确认对话框。我试过 return null; 但它没有用。是否可以禁用对话框？
I'm trying to post data when a user leaves my page. I have finally managed to find a working solution, however, it shows a confirmation dialog when the user leaves. I have tried return null; but it didn't work. Is it possible to disable the dialog?
window.onbeforeunload = function() {
$.post("track.php", {
async: false,
refid: refid,
country: country,
type: type,
});
return '';
}
推荐答案
来自：
这意味着处理程序的返回值必须是 undefined （不是''， false 或 null ），以避免触发确认提示。
This means the return value of the handler must be undefined (not '', false, or null) in order to avoid triggering the confirmation prompt.
window.onbeforeunload = function() {
$.post("track.php", {
...
});
return undefined;
}
在javascript中，您可以完全跳过返回值以获得相同的结果。
In javascript you can skip the return value altogether to get the same result.
在带有jquery的coffeescript中，它类似于
In coffeescript with jquery it's something like
$(document).ready ->
$(window).bind('beforeunload', ->
#put your cleanup code here
undefined
)
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