JavaScript
ecmascript
while(++a);
-/ label: inc eax jnz label
Global === window
_fn0
_fn1
_fnn
5742 310 52 Opera 10.52 10955 1917 644 firefox 3.6 ie 6410 3210
1200 chrome4 10198 78 59
(function(window) { var document = window.document,
documentElement = document.documentElement ; })(window);
(function() { var cachedVar = 1, _cmp = function(a, b){ return a
< b; }, _min = Math.min; Class.prototype._fn = function(a, b) {
this.array.sort(_cmp); return _min(a, b + cachedVar); }; })();
JavaScript 1.7 let ( cachedVar = 1, _cmp = function(a, b){
return a < b; }, _min = Math.min ) { Class.prototype._fn =
function(a, b) { this.array.sort(_cmp); return _min(a, b); };
};
function() { function _self() { arguments.callee.a = 1; _self.a
= 1; } } Opera 10.53 firefox 3.6 ie1673 2477 9454 1068 767 NaN
if(Function.canFastSelf) { $jb._fConstC.__fRet = function() {
return function _self() { return _self.c; }; }; } else {
$jb._fConstC.__fRet = function() { return function() { return
arguments.callee.c; }; }; }
a = {} a = new Object() Opera 10.52 firefox 3.6 ie chrome4906
1319 3154 1218 1237 1888 4016 1891
A = [] a = new Array() Opera 10.52 firefox 3.6 ie chrome41144
1234 3214 1284 1627 1875 4136 1938
/{} = n*'' function(){} = n*'' Opera 10.53 firefox 3.6 ie
chrome42,4 2,75 6,5 1,9 3 2,75 6,25 2,5
If() switch()switch(a) { if(a === 0) { case 0: break; } else
if(a === 1) { case 1: break; } } Opera 10.52 firefox 3.6 ie
chrome41089 1171 1572 1988 1575 1832 1682 2582
Switch switch switch!!!Function.prototype._fBind =
function(that, args) { var _fn = this, _ret; if(that != null) {
_ret = (args != null) ? function(){ return (arguments.length >
0) ? _fn.apply(that, arguments) : _fn.call(that); }; : function(){
return _fn.apply(that, args); } } else { _ret = (args != null) ?
function(){ return (arguments.length > 0) ? _fn.apply(this,
arguments) : _fn.call(this); }; : function(){ return
_fn.apply(this, args); }; } _ret.prototype = _fn.prototype; return
_ret; };
Switch switch switch!!!Function.prototype._fBind =
function(that, args) { var _fn = this, _ret; switch((that != null)
+ ((args != null) 0) ? _fn.apply(that, arguments) : _fn.call(that);
}; break; case 2: _ret = function(){ return _fn.apply(this, args);
}; break; default: _ret = function(){ return (arguments.length >
0) ? _fn.apply(this, arguments) : _fn.call(this); }; }
_ret.prototype = _fn.prototype; return _ret; };
Switch switch switch again!!!switch(mod8) { case 7: a[--j] =
this[--i]; case 6: a[--j] = this[--i]; case 5: a[--j] = this[--i];
case 4: a[--j] = this[--i]; case 2: a[--j] = this[--i]; case 3:
a[--j] = this[--i]; case 1: a[--j] = this[--i]; case 1: a[--j] =
this[--i]; case 0: a[--j] = this[--i]; }
^_^ f.style.left = ((d.x = d.r*_sin(d.t += d.dt) + d.x0)|0) - 20
+ 'px'; f.style.left = ((d.x = d.x0 = _random()*($A.wWidth - 40) +
20)|0) + 'px'; if((temp = d.x - x)*temp + (temp = d.y - y)*temp
< 2601) ( ( this.prototype =
Object.create(_constuctor.prototype) ). constructor = this
).superClass = _constuctor;
for(j=0; j< m ; j+ +) -1; while(++ j = 0; jj= m ; while(j--)
j= ) ) a = j; a = j; a = j; a = j; Opera 10.52 4958 4920 4013 3763
firefox 3.6 5955 5083 5056 4193 6492 4626 5106 3606 ie chrom e4
10723 8756 9112 7137
/
0 != 0 bjec t NaN o fals e true fals e true true false
Infinity null undefined true fals e fals e
i = vs.length; while((v = vs[--i])) ; i = -1; while((v =
vs[++i])) ;
Object.prototype
A.prototype
B.prototype
Z.prototype
Opera 10.52 firefox 3.6 ie chrome46371 7105 7779 10041 6361 7361
8595 10059
DOM Object(v = a[j]).x = 1; v.y = 1; v.z = v.x;(v = a[j].b).x =
1; v.y = 1; v.z = v.x; v.g = v.x + v.y + v.z; v.g = v.x + v.y +
v.z; Opera 10.52 firefox 3.6 ie chrome43278 5669 1572 4758 3385
5246 1682 2292
var Class = function(a0, a1) { this.publicVar = defaultValue;
this._fn0 = function() { this.publicVar = 1; }; };
Class.prototype
Class closure a0 a1
classInst .publicVar ._fn0
var classInst = new Class(1, 2); classInst._fn0();
var Class = function(a0, a1) { this.publicVar = defaultValue; };
Class.prototype._fn0 = function() { this.publicVar = 1; }; var
classInst = new Class(1, 2); classInst._fn0();
Class.prototype ._fn0
classInst .publicVar
Function.prototype._staticDeriveFrom = function(_constuctor) {
var key, dpr = this.prototype, spr = _constuctor.prototype; for(key
in spr) { if(spr.hasOwnProperty(key) && !(key in dpr))
dpr[key] = spr[key]; } return this; };
var DerivedClass = function(a0, a1) { Class.call(this, a0, a1);
}; DerivedClass._staticDeriveFrom(Class);
DerivedClass.prototype._fn1 = function() {
Class.prototype._fn0.call(this); }; var derivedClassInst = new
DerivedClass(1, 2); derivedClassInst._fn1();
DerivedClass.prototype ._fn0 ._fn1
classInst .publicVar
var Class = function(a0, a1) { this._onMouseMove =
this._onMouseMove.bind(this); }; Class.prototype._onMouseMove =
function() { };
Class.prototype .onMouseMove
classInst .onMouseMove binded
var classInst = new Class(1, 2); document.onmousemove =
classInst._onMouseMove;
for in for(j in a) { if(a.hasOwnProperty(j)) ++k; }2162 2073
4998 2780
j = a.length; while(j--) ++k; Opera 10.53 firefox 3.6 ie
chrome41181 1418 1212 1925
.calla = []; a = [] a._fn('b') _fn.call(a, 'b') Opera 10.53
firefox 3.6 ie chrome41236 1641 5247 1476 1546 2436 6549 1834
undefinedtypeof(v) !== 'undefined' v !== undefined v != null 305
313 273 286 431 192 411 361 200 461 581 351
Opera 10.52 firefox 3.6 ie chrome4
undefined Opera 10.52 firefox 3.6 ie chrome4 a['0'] !==
undefined typeof(a['0']) !== 'undefined' '0' in a 2320 1911 1863
3346 1926 18813848 2924 2564
5217
3686
3519
undefined (v = a['0']) !== undefined, vtypeof(v = a['0']) !==
'undefined', v('0' in a), a[i] Opera 10.52 3055 2580 2113 firefox
3.6 3798 2456 1925 ie 3655 3005 4505 chrome4 5109 4216 3628
arguments * jump
.each - $('div.a').each( function(v) { $(v).removeClass('a'); }
); jit
// for(var nodes = $('div.a'), i = 0, len = nodes.length; i <
len; ++i) $(nodes[i]).removeClass('a');
arguments
.call / .apply_fn.call(that) _fn.apply(that, args) Opera 10.52
firefox 3.6 ie chrome41544 2645 7460 1986 2037 2847 10170 2490
isNaNa !== a _isNaN(a) Opera 10.52 firefox 3.6 ie chrome41175
1052 1142 1920 1175 1061 2674 1972
isFinitea/a === 1 || a === 0_isFinite(a) Opera 10.52 firefox 3.6
ie chrome41532 1218 1372 2026 1280 1050 2734 2164
RegExp s.replace(/\s/g, ''); var re = new RegExp(/\s/);
s.replace(re, ''); Opera 10.52 firefox 3.6 ie chrome43838 7014
13600 7853 2054 2211 7070 2395
-> _parseFloat(a) +a 1*a a - 0 695 403 464 435 Opera 10.52
firefox 3.6 531 416 402 391 ie 1212 380 401 391 chrome4 1039 744
791 823
a>>0 a&-1 _floor(a) 1909 Opera 10.53 1386 1370 1371
1606 1567 1575 1762 firefox 3.6 1211 1213 1231 4287 ie chrome4 2652
2501 2544 3313 a|0
a.toString() String(a) StringC(a) '' + a 478 446 413 281 Opera
10.52 firefox 3.6 594 1100 961 304 ie 1833 1652 1472 1042 chrome4
633 893 737 566
'1'.slice() Object.('1').slice()
. RegExp.test switchre = new RegExp(/^link|tbody$/); re.test(a)
case 'link': case 'tbody': Opera 10.52 firefox 3.6 ie chrome42161
3167 7572 4548 1723 1726 2402 3118
String char accessP.charAt O.charAt P.substr O.substr P.slice
O.slice P[] O[] split[] 1403 1336 1344 1373 1350 1401 1084 1059
1069 Opera 10.52 firefox 3.6 1871 1967 2161 2345 2238 2399 1014
1139 1015 ie n/s 7510 10810 7720 11310 7710 11120 n/s 1400 chrome4
2210 2439 2262 2473 2250 2427 2189 2324 1986
if(String.nativeDirectCharAccess) { _fn = new Function(
_fn._argsString(), _fn._body().slice(1,
-1).replace(/\.\s*charAt\s*\ (([^\)]*)\)/g, '[$1]'); }
.slice ( ie)s.slice(0, 8000); s.slice(0, 5000); Opera 10.53
firefox 3.6 ie chrome4388 510 5818 557 345 528 4256 594
var p = ~(~s.indexOf('a') || ~s.indexOf('b') || ~s.indexOf('c')
|| ~oldP); var p = s.lastIndexOf('a') >>> 0; // fix for
opera code.replace( /\s(.*?)\s*=(.*?)>>>\s*0/g, 'if(($1 =
$2) < 0) $1 = 4294967295;' );
String.prototype.__mulNumber = function(n, prefix) { n |= 0;
prefix += ""; var str = "" + this; while(n) { if(n&1) prefix +=
str; n >>= 1; str += str; } return prefix; };
var failCount = -1; while(p < sLen) { if(s.substr(p,
matchMultyLen) === matchMulty) { p += matchMultyLen; matchMultyLen
= 1)); } else { matchMultyLen = matchLen; matchMulty = match;
failCount = -1; } } }
var s = $h.getElementsByTagName('script')[0], checkerBody = '';
if('readyState' in s) { checkerBody += "var rs = v.readyState; \
if(rs === 'loaded' || rs === 'complete')\ return true; \ else\
return false;"; } if($w.opera) { checkerBody += "if(v.text != null)
return true;"; } checkerBody += "return null;";
String.prototype.trim = function() { return (this.lenght <
100) ? this.__trim1() : this.__trim2(); }; String.prototype.trim =
($w.opera) ? function(){...} : function(){...};
arg0 0 _fn0 0,0 500 100 _fn1 arg0 _fn0 2500 _fn2 +inf
_fn2
1000
_fn3
_fn1
arg1
json/xml Debug = /
Release = . . *
$jb.Prepocessor(new $jb.Prepocessor). _define('_IS_FINITE($V)',
$jb._preprocessingTextBegin(function(){ ($V&$V) !== 0 || $V ===
0 })._preprocessingTextEnd() );
General PreProcessor#define _IS_FINITE($V) ($V&$V) !== 0 ||
$V === 0 #end
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