is it posible to force any ie version to FF view using <meta http-equiv=“X-UA-Compatible"?

Question

I was googling, about how to fix compability problem ....
and i get this to force ie8 to latest version ie

<meta http-equiv="X-UA-Compatible" content="IE=edge;/>

in my mind ...
is it posible to force any user agent.
let say from any browser to firefox

example <meta http-equiv="X-UA-Compatible" content="FF=edge;/> or else

Answer 1

Heh, clever thjnking! :) But no, this is not possible.

The X-UA-Compatible header is proprietary, and can be used only to switch between various versions of the same browser engine (At the moment, it is supported only by IE, as far as I know).

You'll have to go the hard route and adjust the CSS so it works in all browsers (or serve different style sheets for different browsers).

Answer 2

As far as I know this line works also for non IE browsers, for example you can use something like this

<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

to force the use of Chrome rendering if available, or the last verison of IE of not. This code is completely valid but I'm not 100% sure what it means and what it really does :)

I have done some google research but I haven't found nothing concrete about it so I think is not a good idea relying only on this line of code for cross-browser compatibility. Personally I insert this code on my sites because it can do no harm :)

Hope it helps.