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Comment by infinity | Hacker News Reader

Some of you may also enjoy aaencode by Yosuke Hasegawa:

Encode any JavaScript program to Japanese style emoticons (^_^)

And of course jjencode:

(hint: have a look at "palindrome")

Apparently, he also did the OP's trick: http://utf-8.jp/public/jsfuck.html (but without, {} even)

Unfortunately, his tricks no longer work in current JS engines; it relies on using

  [].sort.call()

which I believe used to return the global object but now throws an exception.

AFAICT, you need to add {} to make this work in current JS engines.

Dave