Run results for: String from Charcode test with ...

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36

Browser: Chrome 77

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
For-loop	30531.9 Ops/sec
String.fromCharCode.apply	1363968.0 Ops/sec
... iterator to array	1390711.0 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);
... iterator to array
var s = String.fromCharCode(...chars);

Run results for: String from Charcode test with ...

For-loop

String.fromCharCode.apply

... iterator to array