ConditionalComments.qhelp

<!DOCTYPE qhelp PUBLIC
  "-//Semmle//qhelp//EN"
  "qhelp.dtd">
<qhelp>
<overview>
<p>
Conditional comments are only supported in Internet Explorer and should be avoided for portability.
</p>

</overview>
<recommendation>

<p>
Use feature detection (as offered by major frameworks such as <a href="http://jquery.com">jQuery</a>) instead.
</p>

</recommendation>
<example>

<p>
The following code snippet uses conditional comments to detect whether it is running on Internet Explorer 9 or newer.
A better alternative would be to directly check for the desired features using, for instance, jQuery's
<code>$.support</code> object.
</p>

<sample src="examples/ConditionalComments.js" />

<p>
Note that conditional comments are no longer supported in Internet Explorer 11 Standards mode.
</p>

</example>
<references>


<li>Internet Explorer Dev Center: <a href="http://web.archive.org/web/20121103072038/http://msdn.microsoft.com/en-us/library/ie/8ka90k2e(v=vs.94).aspx">@cc_on Statement (JavaScript)</a>.</li>


</references>
</qhelp>