sebastien-p · June 15, 2011 15:49 · sebastien-p · Jun 15, 2011 · mathiasbynens · Jun 15, 2011
diff --git a/annotated.js b/annotated.js
 // Please, see http://rosettacode.org/wiki/LZW_compression#JavaScript
 // and http://en.wikipedia.org/wiki/Lempel–Ziv–Welch for more infos.


 function (
    a // String to compress and placeholder for 'wc'.
 ){

    for (
        var b = a + "Ā", // Append first "illegal" character (charCode === 256).
            c = [], // dictionary
            d = 0,  // dictionary size
            e = d,  // iterator
            f = c,  // w
            g = c,  // result
            h;      // c

        h = b.charAt(e++);
    )

        c[h] = h.charCodeAt(), // Fill in the dictionary ...
        f = 1 + c[a = f + h] ? a : (g[d++] = c[f], c[a] = d + 255, h); // ... and use it to compress data.

    return g // Array of compressed data.

 }
diff --git a/index.js b/index.js
 function(a){for(var b=a+"Ā",c=[],d=0,e=d,f=c,g=c,h;h=b.charAt(e++);)c[h]=h.charCodeAt(),f=1+c[a=f+h]?a:(g[d++]=c[f],c[a]=d+255,h);return g}
diff --git a/LICENSE.txt b/LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Sebastien P. https://twitter.com/#!/_sebastienp

 Special thanks to @subzey (you rock) and @kbjr !

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/package.json b/package.json
 {
    "name": "LZWcompress",

    "description": "JavaScript implementation of the Lempel–Ziv–Welch universal lossless data compression algorithm.",

    "keywords": [
        "LZW",
        "lossless",
        "data",
        "compression"
    ]
 }
diff --git a/test.html b/test.html
 <!DOCTYPE html> 
 <title>Foo</title>
 <div>Expected value: <b>84,79,66,69,79,82,78,79,84,256,258,260,265,259,261,263</b></div>
 <div>Actual value: <b id="ret"></b></div>
 <script>
    var LZWcompress = function(a){for(var b=a+"Ā",c=[],d=0,e=d,f=c,g=c,h;h=b.charAt(e++);)c[h]=h.charCodeAt(),f=1+c[a=f+h]?a:(g[d++]=c[f],c[a]=d+255,h);return g}

    document.getElementById("ret").innerHTML = LZWcompress("TOBEORNOTTOBEORTOBEORNOT")
 </script>
	// Please, see http://rosettacode.org/wiki/LZW_compression#JavaScript
	// and http://en.wikipedia.org/wiki/Lempel–Ziv–Welch for more infos.


	function (
	a // String to compress and placeholder for 'wc'.
	){

	for (
	var b = a + "Ā", // Append first "illegal" character (charCode === 256).
	c = [], // dictionary
	d = 0, // dictionary size
	e = d, // iterator
	f = c, // w
	g = c, // result
	h; // c

	h = b.charAt(e++);
	)

	c[h] = h.charCodeAt(), // Fill in the dictionary ...
	f = 1 + c[a = f + h] ? a : (g[d++] = c[f], c[a] = d + 255, h); // ... and use it to compress data.

	return g // Array of compressed data.

	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Sebastien P. https://twitter.com/#!/_sebastienp

	Special thanks to @subzey (you rock) and @kbjr !

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "LZWcompress",

	"description": "JavaScript implementation of the Lempel–Ziv–Welch universal lossless data compression algorithm.",

	"keywords": [
	"LZW",
	"lossless",
	"data",
	"compression"
	]
	}
	<!DOCTYPE html>
	<title>Foo</title>
	<div>Expected value: <b>84,79,66,69,79,82,78,79,84,256,258,260,265,259,261,263</b></div>
	<div>Actual value: <b id="ret"></b></div>
	<script>
	var LZWcompress = function(a){for(var b=a+"Ā",c=[],d=0,e=d,f=c,g=c,h;h=b.charAt(e++);)c[h]=h.charCodeAt(),f=1+c[a=f+h]?a:(g[d++]=c[f],c[a]=d+255,h);return g}

	document.getElementById("ret").innerHTML = LZWcompress("TOBEORNOTTOBEORTOBEORNOT")
	</script>