Comments on: Detecting browsers javascript hacks

By: Gareth Heyes

Gareth Heyes — Thu, 18 Feb 2010 22:09:53 +0000

@noob

Yeah probably a typo nobody is perfect

noob — Thu, 18 Feb 2010 17:53:04 +0000

i was wondering why are you using ((/a/.toString+”)) instead of (/a/.toString+”) ?

Gareth Heyes — Tue, 09 Feb 2010 14:13:47 +0000

@superhei

Yep Mozilla decided this was a security issue when I reported it so these techniques can no longer be expected to work in later versions of Firefox

superhei — Tue, 09 Feb 2010 14:10:56 +0000

/a/[-1]==’a’ isn’t work on firefox3.6

Jordan — Wed, 23 Dec 2009 01:36:13 +0000

When I run the one-liner in Mac Google Chrome, I get “Unknown”.

Any chance someone could update the one-liner to work with Mac Google Chrome?

Dmitry Binner — Fri, 18 Dec 2009 13:32:50 +0000

I didn’t know that. thank you

Gareth Heyes — Thu, 17 Dec 2009 12:28:44 +0000

@Mathias

Yeah someone already pointed that out:-

Mathias Bynens — Thu, 17 Dec 2009 12:14:45 +0000

The IE check can be shortened to:

IE=!+'\v1';

Tue, 01 Dec 2009 19:22:08 +0000

@gareth:
thanks brother!

Kyle Simpson — Tue, 01 Dec 2009 15:47:24 +0000

Just wanted to share two hacks I’m currently using (in LABjs) for detecting Firefox(Gecko) and for detecting Opera:

is_opera = window.opera && Object.toString.call(window.opera) == “[object Opera]”

is_gecko = (function(o) { o[o] = o+”"; return o[o] != o+”"; })(new String(”__count__”))