IE8 in CompatMode: Conditional Comments bug?

#1 (**permalink**) 03-28-2009

I have a page with script a tag in the HEAD section (just before
conditional comments):

In IE8 Standards Mode everything is OK:
a) ie loads css file just for ie8

but in IE8 Compat View (i've change mode using icon on the right of
the address bar):
a) ie loads BOTH css for ie7 and ie8 (but not for IE6!!)

When I delete script tag (after head section) everything is OK in IE8
standards Mode and CompatMode!! (IE loads appropriete css file)

I'm using Fiddler 2 to see which css file IE loads up.

Please tell me WHY this is happening?

My example:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>

<script type="text/javascript">
// if you delete this script tag everything is OK
</script>

<title>TEST</title>

<![if !IE]>
<link type="text/css" rel="stylesheet" href="/0,style.css"/>
<![endif]>







</head>

<body>
</body>
</html>

#2 (**permalink**) 03-28-2009

If you want to see examples in action:

(You must first install Fiddler2 or some kind of sniffer software to
see which css files are loaded)

http://slawomir.janecki.pl/ie_ok.html
In IE8 Standards Mode loads only css for IE8 (OK)
In IE8 Compat Mode loads only css for IE7 (OK)
All is OK.

http://slawomir.janecki.pl/ie_bad.html
after adding SCRIPT tag before conditional comments (SCRIPT tag is
empty or with some javascript, whatever)
In IE8 Standards Mode loads only css for IE8 (OK)
In IE8 Compat Mode loads 2 css! for IE8 and IE7 (!!!!!!! BAD thing)

Anyone can help he?

#3 (**permalink**) 03-28-2009

Hi Tereska,

The Conditional Comments switch is controlled by the value of the IE
VersionVector in the registry.

In IE8, using the Developer tool, toggle the Browser Mode - Either 7,8 or 8
Compatibility view. Note that there are no IE6 options (IE6 does not have a
version vector value).

Here is the test page that I used for testing during the Beta phase.

http://www.iecustomizer.com/msmvp/ConditionalTest.htm.

So far, with my own development (new, not legacy) I have only the one
conditional comment in my pages.

<div id="divPageWrapper">


...... page wire frame goes here.


</div>

To conveniently test your pages in all IE versions, try IETester from
http://www.debugbar.com.

"Tereska" <janecki@gmail.com> wrote in message
news:53e7f289-efa2-4af0-92a6-2838f7b8077c@d19g2000yqb.googlegroups.com...
> I have a page with script a tag in the HEAD section (just before
> conditional comments):
>
> In IE8 Standards Mode everything is OK:
> a) ie loads css file just for ie8
>
> but in IE8 Compat View (i've change mode using icon on the right of
> the address bar):
> a) ie loads BOTH css for ie7 and ie8 (but not for IE6!!)
>
> When I delete script tag (after head section) everything is OK in IE8
> standards Mode and CompatMode!! (IE loads appropriete css file)
>
> I'm using Fiddler 2 to see which css file IE loads up.
>
> Please tell me WHY this is happening?

>
> My example:
>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
> www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html>
> <head>
>
> <script type="text/javascript">
> // if you delete this script tag everything is OK
> </script>
>
> <title>TEST</title>
>
> <![if !IE]>
> <link type="text/css" rel="stylesheet" href="/0,style.css"/>
> <![endif]>
>
> 
>
> 
>
> 
>
> </head>
>
> <body>
> </body>
> </html>

IE8 in CompatMode: Conditional Comments bug?

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