IE中的onbeforeunload和eval问题 [英] onbeforeunload and eval Problems in IE
问题描述
我正在使用onbeforeunload客户端事件来提示用户
在他们进行更改后离开页面，如本文所讨论的那样
文章：使用ASP .NET在离开页面时提示用户保存
[ http://aspnet.4guysfromrolla.com/art...101304-1.aspx] 。问题
我正在通过eval页面卸载。具体来说，我使用telerik r.a.d.
。菜单
[ http://telerik.com /Default.aspx?PageId=1415] ，通过以下脚本将用户重定向到
另一页：
eval（''窗口。 location.href =''菜单项的网址''）;
当用户试图通过菜单选项离开页面时，他们会得到
提示，如预期的那样，但如果他们单击取消则会出现脚本错误：
eval（）函数调用的行号未指定错误。这个
在Firefox中运行得很好。
我创建了一个非常简单的页面来测试它并确认它是
eval（）函数。下面的页面，当通过IE访问时，显示
提示，如果我点击取消我得到相同的未指定错误。
< script>
函数foo（）
{
返回" bar" ;;
}
window.onbeforeunload = foo;
eval（''window.location.href = \''http：//www.google.com \'''' '）;
< / script>
我无法通过谷歌找到任何关于这是否知名的信息
bug或者是否有任何变通方法。任何想法/建议/意见
非常感谢。 （我也在telerik论坛上发帖;
希望有一种简单的方法可以摆脱那些eval（）语句，
但是我怀疑它......）
TIA
I am using the onbeforeunload client-side event to prompt a user when
leaving a page after they have made changes, as discussed in this
article: Using ASP.NET to Prompt a User to Save When Leaving a Page
[http://aspnet.4guysfromrolla.com/art...101304-1.aspx]. The problem
I am having is with the page unloading via eval. Specifically, I am
using telerik r.a.d. menu
[http://telerik.com/Default.aspx?PageId=1415], which redirects users to
another page via script like:
eval(''window.location.href=''url of menu item'');
When a user attempts to leave the page via a menu option, they get the
prompt, as expected, but if they click Cancel there is a script error:
Unspecified error on the line number of the eval() function call. This
works just fine in Firefox.
I created a VERY simple page to test this out and confirm that it is
the eval() function. The page below, when visited through IE, displays
the prompt and if I click Cancel I get the same Unspecified error.
<script>
function foo()
{
return "bar";
}
window.onbeforeunload = foo;
eval(''window.location.href=\''http://www.google.com\'''');
</script>
I was unable to find any info via Google as to if this is a well-known
bug or if there are any workarounds. Any ideas/suggestions/comments
most appreciated. (I''m posting this in the telerik forums as well;
hopefully there''s an easy way to get rid of those eval() statements,
but I doubt it... )
TIA
推荐答案
Scott Mitchell写道：
< snip>
Scott Mitchell wrote:
<snip>
eval（''window.location.href = \''http：//www.google.com \''''）;
< / script>
< snip>希望有一种简单的方法可以摆脱那些eval（）
语句，但我对此表示怀疑......）
eval(''window.location.href=\''http://www.google.com\'''');
</script> <snip> hopefully there''s an easy way to get rid of those eval()
statements, but I doubt it... )
不，很容易摆脱那个 - eval - 电话。你只需删除它： -
window.location.href =''http://www.google.com'';
Richard。
No, its easy to get rid of that - eval - call. You just remove it:-
window.location.href = ''http://www.google.com'';
Richard.
eval语句嵌入在特定ASP.NET
Web控件（telerik'的rad菜单）的逻辑中。删除eval（）并不像你想象的那么简单。基本上，在
中有一个JavaScript函数，用于r.a.d的脚本库。菜单执行传递内容的评估
in，以及特定命令 - window.location.href ... - 可能是
传入，具体取决于种类菜单设置等等。
The eval statement is embedded in the logic for a particular ASP.NET
Web control (telerik''s r.a.d. menu). Removing the eval() is not as
simple as you make out. Basically there is a JavaScript function in
the script library for r.a.d. menu that does an eval of what is passed
in, and that particular command - window.location.href... - might be
passed in, depending on a variety of menu settings and so forth.
Scott Mitchell写道：
Scott Mitchell wrote:
eval语句嵌入在逻辑中对于特定的ASP.NET
Web控件（telerik的rad菜单）。删除eval（）并不像你想象的那么简单。基本上，r.a.d的脚本库中有一个JavaScript函数。菜单执行传入的内容，以及特定命令 - window.location.href ... - 可能会传入，具体取决于各种菜单设置等。
The eval statement is embedded in the logic for a particular ASP.NET
Web control (telerik''s r.a.d. menu). Removing the eval() is not as
simple as you make out. Basically there is a JavaScript function in
the script library for r.a.d. menu that does an eval of what is passed
in, and that particular command - window.location.href... - might be
passed in, depending on a variety of menu settings and so forth.
然后得到一个更好的菜单系统。
-
兰迪
comp.lang.javascript常见问题 - http://jibbering.com/faq & ;新闻组周刊
Then get a better menu system.
--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq & newsgroup weekly
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