Obfuscate JS

index.js

http://www.jsfuck.com/


// RUN THIS IN JAVASCRIPT

([]+{}+[])[!!{}+![]]+([]+
{}+[])[!!{}+!![]]+(!{}+[]
)[!{}+![]]+([][{}]+[])[!{
}+![]]+(!{}+[])[![]+!!{}+
!!{}+!![]]+({}+{})[(!!{}+
!![])*(!!{}+!![])+!!{}]+(
{}-{}+[])[!!{}+![]]+([]+!
!{})[!{}+![]]+([]+!!{})[!
[]+!!{}+!!{}+!![]]+([][{}
]+[])[![]+!!{}+!![]] // !

obfuscate.txt

[Update]: Now with eval(): http://jsbin.com/usumaq/quiet

possible characters: abcdefijlnorstuy NOI []
sample string:       obfuscated

undefined        = ([][{}]+[])
[object Object]  = ({}+[])
false            = (!{}+[])
true             = ([]+!!{})
NaN              = ({}-{}+[])
Infinity         = (!!{}/![]+[])

0 = !{}+![]
0 = +!{}
1 = !!{}+![]
1 = +!![]
1 = +!+{}
2 = ![]+!!{}+!![]
2 = !!{}+!![]
2 = +!+[]+!!{}
3 = ![]+!!{}+!!{}+!![]
5 = (!!{}+!![])*(![]+!!{}+!![])+!!{}


o ([]+{}+[])[1]
b ([]+{}+[])[2]
f (!{}+[])[0]
u ([][{}]+[])[0]
s (!{}+[])[3]
c ({}+{})[5]
a ({}-{}+[])[1]
t ([]+!!{})[0]
e ([]+!!{})[3]
d ([][{}]+[])[2]


([]+{}+[])[!!{}+![]]+
([]+{}+[])[!!{}+!![]]+
(!{}+[])[!{}+![]]+
([][{}]+[])[!{}+![]]+
(!{}+[])[![]+!!{}+!!{}+!![]]+
({}+{})[(!!{}+!![])*(!!{}+!![])+!!{}]+
({}-{}+[])[!!{}+![]]+
([]+!!{})[!{}+![]]+
([]+!!{})[![]+!!{}+!!{}+!![]]+
([][{}]+[])[![]+!!{}+!![]]

([]+{}+[])[!!{}+![]]+([]+{}+[])[!!{}+!![]]+(!{}+[])[!{}+![]]+([][{}]+[])[!{}+![]]+(!{}+[])[![]+!!{}+!!{}+!![]]+({}+{})[(!!{}+!![])*(!!{}+!![])+!!{}]+({}-{}+[])[!!{}+![]]+([]+!!{})[!{}+![]]+([]+!!{})[![]+!!{}+!!{}+!![]]+([][{}]+[])[![]+!!{}+!![]]

Brilliant. Now implement this in Brainfuck or vice versa. ;-)

([][{}]+[])[6]+([][{}]+[])[5]+({}+{})[5]+([][{}]+[])[3]+"!"

Actually there is a tool : http://utf-8.jp/public/jsfuck.html

@tsaniel Damn, I thought I'm the first one who worked that out.
Just got the crazy constructor thing working to get the latest missing chars:

m = (0..constructor+"")[11]

But the tools seems to be broken in Node and Chrome.

Array.prototype.sort called on null or undefined

I guess that's an issue when they try to get "w" using this:

[].sort.call()

In old browsers it returned window but now it doesn't.

Ps: The source of this converter is a bit more readable:
http://discogscounter.getfreehosting.co.uk/js-noalnum.php?txt=%22abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ%22