Run results for: String from Charcode test 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.129 Safari/537.36

Browser: Chrome 81

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
For-loop	52863.6 Ops/sec
String.fromCharCode.apply	1437327.6 Ops/sec
join method	49835.7 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];
function test1(arr) {
  const l = arr.length;
  var i = 0;
  var s = "";
  for(;i<l;i++){
    s+=String.fromCharCode(arr[i]);
  }
  return s;
}
function test2(arr) {
  return String.fromCharCode.apply(null, arr);
}
function test3(arr) {
  const l = arr.length;
  var i = 0;
  var a = [];
  for(;i<l;i++){
    a[i]=String.fromCharCode(arr[i]);
  }
  return a.join("");
}

Tests:

For-loop
var t1 = test1(chars);
String.fromCharCode.apply
var t2 = test2(chars);
join method
var t3 = test3(chars);

Run results for: String from Charcode test 2

For-loop

String.fromCharCode.apply

join method