Run results for: String from Charcode cached (deg)

Run details:

User agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0

Browser: Firefox 52

Operating system: Windows XP

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
For-loop	197931.9 Ops/sec
String.fromCharCode.apply	539508.3 Ops/sec
loop: String cached	237576.6 Ops/sec
loop: String.fromCharCode cached	242205.9 Ops/sec
join: String.fromCharCode cached	214051.4 Ops/sec

Script Preparation code:

var chars = [239,15,2,1,227,15,118,2,68,63,49,59,56,90,0,44,15,143,1,206,15,251,7,255,56,15,43,2,206,15,225,0,255,74,15,135,3,255,56,15,74,1,71,15,0,3,255,74,15,92,1,242,15,172,8,44,15,63,0,107,15,194,1,242,15,5,1,224,15,118,2,65,15,184,11,255,17,63,49,59,56,234,6,71,15,90,0,218,15,180,3,224,15,243,0,255,56,15,42,3,218,15,237,0,161,15,235,2,255,56,15,74,1,255,8,15,3,9,65,15,84,0,86,15,215];

Tests:

For-loop
var s = ""; for(var i=0,l=chars.length; i<l; i++) s += String.fromCharCode(chars[i]);
String.fromCharCode.apply
var s = String.fromCharCode.apply(null, chars);
loop: String cached
var s = ""; var S = String; for(var i=0,l=chars.length; i<l; i++) s += S.fromCharCode(chars[i]);
loop: String.fromCharCode cached
var s = ""; var f = String.fromCharCode; for(var i=0,l=chars.length; i<l; i++) s += f(chars[i]);
join: String.fromCharCode cached
var s = new Array(chars.length); var f = String.fromCharCode; for(var i=0,l=chars.length; i<l; i++) s[i] = f(chars[i]); s = s.join('');

Run results for: String from Charcode cached (deg)

For-loop

String.fromCharCode.apply

loop: String cached

loop: String.fromCharCode cached

join: String.fromCharCode cached