lxyd/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    Deep clone for plain hashes and arrays

Clones plain js hashes and arrays recursively. But ignores Dates and object Wrappers like Boolean(), Number() etc.
Tested in IE8, Chromium, Firefox, Opera and on Android.
Handles circular references (loops of the length 1).
If you want a more powerfull deepcloner (not fitting in 140 bytes though), consider using this one: https://gist.github.com/0d3e6ce689e76105f3ef

  
## annotated.js
function c(o,i,r){                        // only "o" is used as an argument, r and i are used as mere local variables. "r" MUST be undefined
    if(o && typeof o=="object") {         // clone "o" only if it is an "object" and is not null
        r = o instanceof Array ? [] : {}; // use "instanceof" instead of Array.isArray() to support IE8
        for(i in o)
            o.hasOwnProperty(i)?          // "condition?action:0" saves us a single byte (compare to "if(condition)action")
                                          // recursive cloning goes here:
            r[i] = o[i]===o ? r : c(o[i]) // if "o[i]" is "o" - we have a primitive 1-length loop. Hanlde it
            :0                            // end of the "condition?action:0" statement
    }
    return r||o                           // if r was assigned to {} or [] then return r. Otherwise return the original object
}                                         // when all spaces and comments are removed this function is exactly 140 bytes!

## index.js
function c(o,i,r){if(o&&typeof o=="object"){r=o instanceof Array?[]:{};for(i in o)o.hasOwnProperty(i)?r[i]=o[i]===o?r:c(o[i]):0}return r||o}

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

 Copyright (C) 2012 lxyd <https://github.com/lxyd>, TheShock <https://github.com/theshock>

 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": "planeObjectDeepCloner",

  "description": "Recursively clones plain hashes and arrays (but not Dates or wrappers like Boolean(), String(), Number()). Handles one-level circular references.",

  "keywords": [
    "clone",
    "object",
    "array"
  ]
}

## test.html
<!DOCTYPE html>
<title>Deep Cloner</title>
<script>
  function c(o,i,r){if(o&&typeof o=="object"){r=o instanceof Array?[]:{};for(i in o)o.hasOwnProperty(i)?r[i]=o[i]===o?r:c(o[i]):0}return r||o}

  var x = {
    a: [
      {a:0, b:null, c:[1,2,"foo"]},
      1,
      null
    ],
    b: {
      a:{},
      b:null,
      c:[1,2,3]
    }
  };

  x.c = x; // circular reference (1-length loop)

  var y = c(x);
  document.write('Just after cloning<br/>');

  document.write('x.c === x: ' + (x.c === x) + '<br/>');
  document.write('y.c === y: ' + (y.c === y) + '<br/>');

  document.write('x.a[0].c[2] == ' + x.a[0].c[2] + '<br/>');
  document.write('y.a[0].c[2] == ' + y.a[0].c[2] + '<br/>');


  x.a[0].c[2] = "bar";
  document.write('<br/>After assiginig x.a[0].c[2] = "bar"<br/>');

  document.write('x.a[0].c[2] == ' + x.a[0].c[2] + '<br/>');
  document.write('y.a[0].c[2] == ' + y.a[0].c[2] + '<br/>');

</script>
	function c(o,i,r){ // only "o" is used as an argument, r and i are used as mere local variables. "r" MUST be undefined
	if(o && typeof o=="object") { // clone "o" only if it is an "object" and is not null
	r = o instanceof Array ? [] : {}; // use "instanceof" instead of Array.isArray() to support IE8
	for(i in o)
	o.hasOwnProperty(i)? // "condition?action:0" saves us a single byte (compare to "if(condition)action")
	// recursive cloning goes here:
	r[i] = o[i]===o ? r : c(o[i]) // if "o[i]" is "o" - we have a primitive 1-length loop. Hanlde it
	:0 // end of the "condition?action:0" statement
	}
	return r\|\|o // if r was assigned to {} or [] then return r. Otherwise return the original object
	} // when all spaces and comments are removed this function is exactly 140 bytes!
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2012 lxyd <https://github.com/lxyd>, TheShock <https://github.com/theshock>

	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": "planeObjectDeepCloner",

	"description": "Recursively clones plain hashes and arrays (but not Dates or wrappers like Boolean(), String(), Number()). Handles one-level circular references.",

	"keywords": [
	"clone",
	"object",
	"array"
	]
	}
	<!DOCTYPE html>
	<title>Deep Cloner</title>
	<script>
	function c(o,i,r){if(o&&typeof o=="object"){r=o instanceof Array?[]:{};for(i in o)o.hasOwnProperty(i)?r[i]=o[i]===o?r:c(o[i]):0}return r\|\|o}

	var x = {
	a: [
	{a:0, b:null, c:[1,2,"foo"]},
	1,
	null
	],
	b: {
	a:{},
	b:null,
	c:[1,2,3]
	}
	};

	x.c = x; // circular reference (1-length loop)

	var y = c(x);
	document.write('Just after cloning<br/>');

	document.write('x.c === x: ' + (x.c === x) + '<br/>');
	document.write('y.c === y: ' + (y.c === y) + '<br/>');

	document.write('x.a[0].c[2] == ' + x.a[0].c[2] + '<br/>');
	document.write('y.a[0].c[2] == ' + y.a[0].c[2] + '<br/>');


	x.a[0].c[2] = "bar";
	document.write('<br/>After assiginig x.a[0].c[2] = "bar"<br/>');

	document.write('x.a[0].c[2] == ' + x.a[0].c[2] + '<br/>');
	document.write('y.a[0].c[2] == ' + y.a[0].c[2] + '<br/>');

	</script>