jQuery 如何在离开页面时控制浏览器确认对话框？
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How to control browser confirmation dialog on leaving page?
提问by Noah Martin
I know there are a lot of questions regarding this but nothing is answering me right. I want to show a confirmation dialog when user leaves the page. If the user press Cancel he will stay on page and if OK the changes that he has made will be rollback-ed by calling a method. I have done like this:
我知道对此有很多问题，但没有什么能正确回答我。我想在用户离开页面时显示一个确认对话框。如果用户按取消，他将留在页面上，如果确定，他所做的更改将通过调用方法回滚。我这样做了：
window.onbeforeunload = function () {
var r = confirm( "Do you want to leave?" );
if (r == true) {
//I will call my method
}
else {
return false;
}
};
The problem is that I am getting the browser default popup: "LeavePage / StayOnPage"
问题是我得到了浏览器默认弹出窗口：“LeavePage/StayOnPage”
This page is asking you to confirm that you want to leave - data you have entered may not be saved.
此页面要求您确认是否要离开 - 您输入的数据可能不会被保存。
This message is shown in Firefox, in Chrome is a little different. I get this popup after I press OK on my first confirmation dialog.
此消息在 Firefox 中显示，在 Chrome 中略有不同。在我的第一个确认对话框中按 OK 后，我得到了这个弹出窗口。
Is there a way not to show this dialog? (the second one, that I did not create). Or if there is any way to control this popup, does anyone know how to do that? Thanks
有没有办法不显示这个对话框？（第二个，我没有创建）。或者如果有任何方法可以控制这个弹出窗口，有没有人知道怎么做？谢谢
采纳答案by Thor Jacobsen
Here's what I've done, modify to fit your needs:
这是我所做的，根据您的需要进行修改：
// This default onbeforeunload event
window.onbeforeunload = function(){
return "Do you want to leave?"
}
// A jQuery event (I think), which is triggered after "onbeforeunload"
$(window).unload(function(){
//I will call my method
});
Note: it's tested to work in Google Chrome, IE8 and IE10.
注意：它经过测试可以在 Google Chrome、IE8 和 IE10 中工作。
