Is it possible to use conditional comments from within a Chrome Frame?

Question

When using...

.ie8-7-6 .loginForm {display:none;} /* The login form is hidden. */
         


        

Answer 1

The best way to detect that you're in Chrome Frame inside IE is checking for

var isChromeFrame = !!window.externalHost;

This is only available inside Chrome Frame. Currently there are no conditional comments-like construct for Chrome Frame.

More at http://www.chromium.org/developers/how-tos/chrome-frame-getting-started/understanding-chrome-frame-user-agent.

But to your situation, if the user has Chrome Frame installed already and you're triggering it via a chrome=1 flag, then they'll never see any content inside of IE conditional comments.