Removing legacy features

Because some features in earlier versions of IE aren’t compatible with HTML5 parsing, we’ve removed them from IE10 mode. Sites that rely on these legacy features will still work when running in legacy modes. This way, sites that work today will continue to work with IE10 even if the developers of the site don’t have the time to update them.


Conditional Comments

<!--[if IE]>

This content is ignored in IE10 and other browsers.

In older versions of IE it renders as part of the page.

<![endif]-->

This means conditional comments can still be used, but will only target older versions of IE. If you need to distinguish between more recent browsers, use feature detection instead.