convert HEX to RGB

annotated.js

function(
  a                  // take a "#xxxxxx" hex string,
){
  a = +(             // turn it into a number by taking the
    "0x" +           // hexadecimal prefix and the
    a.slice(1)       // numerical portion,
    .replace(        // and
      a.length > 4   // if the #xxxxxx form is used
        && /./g,     // replace each character
      '$&$&'         // with itself twice.
    )
  );

  return [        // return an array
    a >> 16,      // with red,
    a >> 8 & 255, // blue,
    a & 255       // and green components.
  ]
}

index.js

function(a){a='0x'+a.slice(1).replace(a.length>4&&/./g,'$&$&');return[a>>16,a>>8&255,a&255]}

LICENSE.txt

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

 Copyright (C) 2011 Jed Schmidt <http://jed.is>

 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.

package.json

{
  "name": "hex2rgb",

  "description": "Converts a hex string to RGB.",

  "keywords": [
    "hex",
    "color",
    "rgb" 
  ]
}

@mathiasbynens no.

'#bbaacc'.replace('a', '$&$&')

I've tested the code in IE6, 8, and it returns a wrong result as a string doesn't act like an array in those IE versions. I think a[4] should be replaced by a.length>4

fixed. thanks again, @tsaniel!

I find it we can save another byte.

function(a){a='0x'+a.slice(1).replace(a.length>4&&/./g,'$&$&');return[a>>16,a>>8&255,a&255]}

relentless golfing, @tsaniel!

Wait, >4? Doesn't it need to be the other way round, <4?

@atk: Thanks for your carefulness! i just did it anyhow.

Both wrong with >4 and <4
Shound be a.length<5&&/./g

function hexToRgb(hex) {
var number = parseInt(hex, 16);
console.log(number)
var r = (number >> 16) & 255;
var g = (number >> 8) & 255;
var b = number & 255;
console.log(r,g,b)
return {red: r, green: g, blue: b};
}
let rgb = hexToRgb(0xFFFFFF)
Gives 119 114 21 , any ideas why