Benchmark Run Result for: string literal vs array join

Script Preparation code:

var arr = Array(50000)
  .fill(1)
  .map(() => 'A' + Math.ceil(Math.random() * 100));

AخA
 
var arr = Array(50000)  .fill(1)  .map(() => 'A' + Math.ceil(Math.random() * 100));

Tests:

array.join
var res=arr.join('; ');
var res=arr.join('; ');
string literal
var finalString2 = arr.reduce((res, item) => { return `${res}; ${item}`; }, '');
var finalString2 = arr.reduce((res, item) => {
return `${res}; ${item}`;
}, '');
string concatenation
var finalString3 = arr.reduce((res, item) => { return res + '; ' + item; }, '');
var finalString3 = arr.reduce((res, item) => {
return res + '; ' + item;
}, '');