bga

String.prototype.template = function (scopeEval) {
  // Andrea Giammarchi - WTFPL License
  var
    re = /\$\{([\S\s]*?)\}/g,
    evaluate = [],
    i = 0,
    m
  ;
  while (m = re.exec(this)) {
    evaluate.push(

bga

var i,n=300000;

var d0=new Date().getTime();
for(i=0;i<n;++i)
  "1.5"-0;    
alert("-0: "+(new Date().getTime()-d0)+" ms");

var d0=new Date().getTime();
for(i=0;i<n;++i)
    +"1.5";

bga

// Sorry. Hack fail :(
// "Speedup" in opera and chrome because bugs in webkit (compile return undefined)
// and opera (invalid regexp object return).
// Giant thanks to @jdalton and @diegoperini
var i,n=20000;
var i=0;
var t="";

for(i=0;i<10000;++i)
  t+=" a";

bga

function repeatStringBinary(str, how_many)
{
  how_many|=0; // convert to number and round
  str+=""; // convert to string
  
  if(how_many<=0 || str.length==0)
    return "";
  if(how_many==1)
    return str;
  if(how_many==2)

bga

function repeatString(str, how_many)
{
  how_many|=0; // convert to number and round
  str+=""; // convert to string
  
  if(how_many<=0 || str.length==0)
    return "";
  if(how_many==1)
    return str;
  if(how_many==2)

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)
{

bga

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

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

// 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();
}