Mozilla的Firefox不能使用window.onbeforeunload [英] Mozilla firefox not working with window.onbeforeunload

问题描述

我使用 window.onbeforeunload 在windows关闭时向用户显示消息，该功能在Chrome和IE中运行良好，但不适用于Firefox ，我使用的是Firefox的版本 26.0 我已经尝试了很多，但没有任何意思，有人说，它在Firefox中的错误，因为在这个信息，另一个建议一些解决方案，如帖子我尝试了所有可用的解决方案，使用JavaScript和jQuery，但它不工作，现在我显示确认对话框，但浏览器默认对话框出现后，我不满意，我也试图阻止浏览器默认对话框出现使用 preventDefault（），但也与没意思！如果有任何解决这个问题，这将是伟大的，这是我如何使用 window.onbeforeunload ：

I'm using window.onbeforeunload to display a message to the user on windows close, the function works well with chrome and IE but it doesn't work with Firefox, i'm using firefox version 26.0 i have tried many but with no mean, somebody said that its a bug in firefox as in this post and another suggests some solutions as in this post i tried all the solutions available using javascript and jquery but it doesn't work, now i display a confirm dialog but the browser default dialog appears after it and i'm not satisfied with that, i tried also to prevent the browser default dialog from appearing using preventDefault() but also with no mean!! if there's any solution to this problem it will be great, here's how i used the window.onbeforeunload:

<script>
window.onbeforeunload = confirmWinClose();
function confirmWinClose() {
     var myVar ='${isFireFox}';
     if(myVar=='true'){
         return confirm(confirmExamClose);
     }else{
         return confirmExamClose;
     }

}
<script>

注意： isFireFox 是一个jsp变量我曾经知道使用 User-Agent 标题和 confirmExamClose 浏览器的类型是我显示给用户。

Note:isFireFox is a jsp variable that i used to know the type of the browser using User-Agent Header and confirmExamClose is the message that i display to the user.

推荐答案

这是Firefox和Chrome的工作解决方案。我还没有在Safari和Opera测试过。

Here is working solution for Firefox and Chrome. I haven't yet tested in Safari and Opera.

var myEvent = window.attachEvent || window.addEventListener;
var chkevent = window.attachEvent ? 'onbeforeunload' : 'beforeunload'; /// make IE7, IE8 compitable

myEvent(chkevent, function(e) { // For >=IE7, Chrome, Firefox
    var confirmationMessage = 'Are you sure to leave the page?';
    (e || window.event).returnValue = confirmationMessage;
    return confirmationMessage;
});

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