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I am extreamly new to HTML,

my goal is to set a global js variable to true when my website is running on IE.

I started by writing 

<script> var runningIE = false;</script>
<!--[if IE ]>
    Special instructions for IE here
    <script> runningIE = true;</script>
<![endif]-->

no matter where I put this code (header, body) I don't see Special instructions for IE here printed anywhere not runningIE would be set to true on IE.

What am I missing here?

Oliver Charlesworth
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Kam
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1 Answers1

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You are probably testing in IE 10, which does not support conditional comments (browser sniffing is not a good idea in the first place, and IE has improved a lot since the days when it was useful to throw a huge pile of IE specific fixes into a condcom).

Quentin
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    Use feature detection instead of browser detection. – Quentin Jul 13 '13 at 06:35
  • There are still [a lot of cases](https://github.com/Modernizr/Modernizr/wiki/Undetectables) where UA sniffing is useful. Alternatively, use [conditional compilation](http://msdn.microsoft.com/en-us/library/ie/121hztk3%28v=vs.94%29.aspx). – user123444555621 Jul 13 '13 at 06:40