bga

var _nodeUnique = function (nodeArray) {
	var a = -1, len = nodeArray.length, b = -1, ret = new Array();

	while (++a < len) {
    while (++b < len && nodeArray[b] === nodeArray[a])
			;
    
    ret[b] = nodeArray[a];  
	}

bga

var i,n=1000000;
var a="123";
var b=Object(a);

console.time("Primitive.charAt");
i=n;
while(i--)
  a.charAt(0);
console.timeEnd("Primitive.charAt");

bga

    var 
      parseAcceptRE = new RegExp(/[{}\[\]:,]+|\"([^\\\"]*?\\.)*[^\"]*?\"|[+\-]?\d+(?:\.\d+)?(?:[eE][+\-]?\d+)?|true|false|null|\s+/g),
      
      // var name at begin
      // keywords, which can be written space separeted
      // specific keywords
      // operator and var name or object
      // property access (but not number point delimiter)
      // property access via square bracket (but not array declaration)
      unsafeCharsRE = new RegExp(/^[a-zA-Z_\$\/]|var|new|instanceof|var|function|typeof|(?![\[,:]\[)[\+\-\*\/%\^&\|~\!\=<>\:,\[\(]\s*[a-zA-Z_\$\/\[]|\.[a-zA-Z_\$]|[\w\$\/\)\]]\s*\[/);

bga

/* tnx @kangax for idea */

var i, n = 400000,
  _fn = function(){}, that = {}, args = [];

console.time("call");
i = n; while(i--)
{  
  _fn.call(that);
}    

bga

// ==UserScript==
// @name 404cache
// @author Bga
// @version 0.11
// @description improve 404 default opera page by adding links to google and yandex cache
// ==/UserScript==

document.addEventListener("DOMContentLoaded",function(){

var $d = document, $h, v, vs, s, cs, c;

bga

// tnx http://4umi.com/web/javascript/optimize.php for idea, but while(i--) the best :) (except opera :/)

var _fn = function(){};
var i, n=30, j, m = 100000;

console.time("1");
i = n; while(i--)
{  
for( j = 0; j < m; j++ ) _fn();
}    

bga

var i,n=3000, j;
var a=document.getElementsByTagName('li'), m = a.length, v;

for(j = 0 ; j < m ; ++j)
  a[j].b = {};

console.time("1");
for(i = 0 ; i < n ; ++i)
  for(j = 0 ; j < m ; ++j)

bga

/* MODIFY PROTOTYPE */
var _fn=function(){};
_fn.prototype.a=1;
var v=new _fn();

alert(v.a === 1); /* true */
alert(v.constructor === _fn); /* true */


/* REPLACE PROTOTYPE */

bga

bga

/**
  @fn construct HTMLDocumentFragment or HTMLElement from 'html' string  in 'doc'
  @param html string that contains html
  @param doc owner HTMLDocument for result. Optional  
  @return HTMLDocumentFragment or HTMLElement depend from 'html'
*/
$jb.DOMNode._fromHTML=null;

if("applyElement" in $h)
{