问题
I understand from my research that IE8 does annoying things like forcing itself into IE7 mode for local intranet hosts and local IP ranges. I understand from a previous question that there is no way to use conditional statements as, irrespective of whether IE8 is rendering in IE8 or IE7 mode, it will still only use the <!--[if IE 8]> conditional.
Since this question was asked a while ago (during the IE8 beta phase by the looks of things) I am wondering if this has changed or if there is any other way using conditionals to determine if IE8 is in compatibility mode.
Thanks!
回答1:
No, you can't do it using conditionals.
The best way to do it is to use the document.documentMode property as described in the link Pekka posted. How can I detect if IE8 is running in compatibility view?
回答2:
http://msmvps.com/blogs/paulomorgado/archive/2010/04/05/defining-document-compatibility-in-internet-explorer-8.aspx
回答3:
In the end, I chose to mix the two common strategies to deal with this bug.
I created an override CSS file, which I import using conditional comments. In the event of IE 8 or 9, though, this override doesn't look as good, so I include the 'force IE into latest rendering mode' header switch, as shown below.
<!--[if lte IE 7]>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<link rel="stylesheet" type="text/css" href="/Content/IE7Overrides.csss" />
<![endif]-->
This provides IE7 with a decent failsafe, but forces IE8 and IE9 to show it in the latest browser, which will show the CSS-based table correctly.
来源：https://stackoverflow.com/questions/3140116/determine-if-in-ie8-compatibility-mode-using-conditionals