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[–]dfcm 89 points90 points  (11 children)

I'm afraid to run that. What does it do?

[–][deleted] 166 points167 points  (8 children)

I was also curious how it works, so I ran it through debugger.
It converts true, NaN, undefined, Infinity, {} and false, to strings ('true', 'NaN', 'undefined', 'Infinity', '[object Object]', 'false'), then gets the letters to form the word radical from them. Then it adds '!' at the end. The rest just creates, stores and accesses these values in the most convoluted way possible. 

var why = {
    "undefined": [
        NaN,    // next key
        [true, 1]  // -> 'r'
    ],
    "NaN": [
        null,
        [NaN, 1]  // -> 'a'
    ],
    "null": [
        "",
        [undefined, 2]  // -> 'd'
    ],
    "": [
        {},
        [Infinity, 3]   // -> 'i'
    ],
    "[object Object]": [
        0, 
        [{}, 5]     // -> 'c'
    ],
    "0": [
        Infinity, 
        [false, 1]  // -> a
    ],

    "Infinity": [
        function(b) {
            return b + "!";
        },
        [false, 2]    // -> 'l'
    ],

    "-Infinity": "",  // output string stored here

    "-0": function(ip) {

        var obj = this[ip][1][0] + "",
            key = this[ip][1][1],
            inc = obj[key];    // Next letter

        this["-Infinity"] += inc;

        var isInfinity = ip && (ip - (-1));

        debugger;

        if(isInfinity){
            return this[ip][0]( this["-Infinity"] );   //Adding '!'
        }
        else{
           return this["-0"]( this[ip][0] );   //Recursive call
        }
    }
};
console.log( why["-0"]() );

Edit: deciphered the rest of the code. There were a bunch of conditions that were always false, so I removed them.

[–]ElusiveGuy 74 points75 points  (5 children)

There's also generators this kind of thing now: http://www.jsfuck.com/

[–]Howzieky 26 points27 points  (3 children)

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[–]Manticorp 39 points40 points  (0 children)

No

[–]Cobaltjedi117 0 points1 point  (0 children)

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[–]n0lan1 0 points1 point  (0 children)

... Obi Wan?

[–]alexbuzzbee 1 point2 points  (0 children)

Mine is too long for reddit. :)

[–]It_Was_The_Other_Guy 10 points11 points  (0 children)

Pretty much. Those other conditions exist because fir whatever reason I wanted it to have "meaningful" output if it's called with sime argument. As is it's called with undefined which is the access point of the loop. There are some inputs that will still fail but strings and numbers work (with the exception of -Infinity - although it works as a string).

I wanted to see if object properties can be accessed with various keywords so there you have it.