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I found out that my javascript-intensive web site doesn't work reliably (or at all) in IE9.

It works, (usually, but not always) with the compatibility mode meta tag in the header, but I just want to build a page that I know will work well in IE9 and then have the usual page redirect to it when IE9 is detected. The usual page is fine in IE 7 and 8 (and every other browser I've tried it on).

Can anyone give me some javascript that will do that? Thank you!

Here's my usual page:

http://ianmartinphotography.com/test-site/test/

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    Your site gets JavaScript errors in Chrome. You might want to check into that. Commented Sep 13, 2011 at 19:25
  • Found this, but I think I prefer browser functionality detection in retrospect. See: stackoverflow.com/a/14835682/2140998 Commented Sep 22, 2015 at 16:56

2 Answers 2

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The simplest way would be to use IE Conditionals.

Note: IE10 and beyond have removed support for this feature. For modern browsers the widely accepted way of conditionally displaying content for compatibility purposes is using feature detection. Modernizr is a popular library built for handling feature detection.

For example:

<!--[if IE 9]> <script type="text/javascript"> window.location = "http://www.ie9version.com"; </script> <![endif]-->

Examples from the conditional site:

<!--[if IE]><p>You are using Internet Explorer.</p><![endif]--> <![if !IE]><p>You are not using Internet Explorer.</p><![endif]> <!--[if IE 7]><p>Welcome to Internet Explorer 7!</p><![endif]--> <!--[if !(IE 7)]><p>You are not using version 7.</p><![endif]--> <!--[if gte IE 7]><p>You are using IE 7 or greater.</p><![endif]--> <!--[if (IE 5)]><p>You are using IE 5 (any version).</p><![endif]--> <!--[if (gte IE 5.5)&(lt IE 7)]><p>You are using IE 5.5 or IE 6.</p><![endif]--> <!--[if lt IE 5.5]><p>Please upgrade your version of Internet Explorer.</p><![endif]--> <!--[if true]>You are using an <em>uplevel</em> browser.<![endif]--> <![if false]>You are using a <em>downlevel</em> browser.<![endif]> <!--[if true]><![if IE 7]><p>This nested comment is displayed in IE 7.</p><![endif]><![endif]-->
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8 Comments

And perhaps a meta redirect inside a <noscript> (or just the meta redirect; I don't know which is more reliable)
Okay, that looks nice and simple--if I just want to redirect for IE, all versions, then I'd have <![if IE ]> ? Thanks!
I just updated the answer. They need to be commented conditional comments. <!--[if IE 9]><![endif]--> instead of <![if IE 9]><![endif]>.
@Bengel, can I a redirect for more than one, say, IE 6, IE 7 and IE 8? What would that look like?
Just note this is not working for IE 10. If you need a solution for it, check this post: stackoverflow.com/questions/19502040/…
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<script LANGUAGE="JavaScript"> <!-- if( navigator.appName.toLowerCase().indexOf("microsoft") > -1 || navigator.userAgent.toLowerCase().indexOf("msie") > -1 ) { window.open("http://www.pobox.com/~qed/windoze.html", "Windoze", "dependent=no,titlebar=no,scrollbars=yes" ); } // Paul Hsieh // qed at pobox dot com // --> </script>

Source: http://www.cexx.org/snicker/nomsie.htm

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