是否有任何跨浏览器的JavaScript/jQuery代码来检测浏览器或浏览器标签是否正在关闭,但不是由于链接被单击?


当前回答

window.onbeforeunload = function ()
{       

    if (isProcess > 0) 
    {
        return true;       
    }   

    else
    { 
        //do something      
    }
}; 

此功能在浏览器运行过程中关闭窗口或刷新页面时显示确认对话框。该函数适用于所有浏览器。你必须在ajax进程中设置isProcess var。

其他回答

如果我没说错,你想知道什么时候一个标签/窗口是有效关闭的。好吧,在JavaScript中检测这个的唯一方法是使用onunload或onbeforeunload事件。

不幸的是(或幸运的是?),当您通过链接或浏览器的后退按钮离开网站时,这些事件也会被触发。这是我能给出的最好答案,我不认为你能在JavaScript中原生检测纯close。如果我说错了,请指正。

Sorry, I was not able to add a comment to one of existing answers, but in case you wanted to implement a kind of warning dialog, I just wanted to mention that any event handler function has an argument - event. In your case you can call event.preventDefault() to disallow leaving the page automatically, then issue your own dialog. I consider this a way better option than using standard ugly and insecure alert(). I personally implemented my own set of dialog boxes based on kendoWindow object (Telerik's Kendo UI, which is almost fully open-sourced, except of kendoGrid and kendoEditor). You can also use dialog boxes from jQuery UI. Please note though, that such things are asynchronous, and you will need to bind a handler to onclick event of every button, but this is all quite easy to implement.

然而,我同意缺少真正的关闭事件是很糟糕的:例如,如果你想在真正关闭的情况下才在后端重置会话状态,这是一个问题。

它可以用来提醒用户是否有数据未保存或类似的事情。当标签页关闭或浏览器关闭或网页刷新时,此方法有效。

除非用户没有与网页进行交互,否则它不会工作,这是一种对抗恶意网站.....的机制除非你至少在网站窗口上点击或触摸,否则不会弹出窗口。

<!DOCTYPE html>
<html>
<head>
</head>
<body>
    <form>
        <textarea placeholder = "Write...."></textarea>
    </form>
    <script type="text/javascript">
        window.addEventListener('beforeunload', function (e) {
            e.returnValue = '';
        });
    </script>
</body>
</html>
$(window).unload( function () { alert("Bye now!"); } );

试试这个, 我相信这对你有用。

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type='text/javascript'>
    $(function() {

        try{
            opera.setOverrideHistoryNavigationMode('compatible');
            history.navigationMode = 'compatible';
        }catch(e){}

        function ReturnMessage()
        {
            return "wait";
        }

        function UnBindWindow()
        {
            $(window).unbind('beforeunload', ReturnMessage);
        }

        $(window).bind('beforeunload',ReturnMessage );
    });
</script>