Using javascript to detect browser type [duplicate]

Question

I'm trying to use this line to detect browser type: IE or Firefox.

alert(isBrowser("Microsoft"));

but I get absolutely nothing, the alert doesn't even pop up. Not sure what I'm doing wrong.

What would be the best practice way to detect browser type?

Answer 1

I hope this helps:

http://www.quirksmode.org/js/detect.html

(it's a long script, so i don't want to post it here)

Answer 2

Try this:

alert(navigator.appName);