Run results for: array.forEach() vs .reduce vs for of vs for test2

Run details:

User agent: Mozilla/5.0 (Linux; Android 12) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Mobile Safari/537.36

Browser: Chrome Mobile 99

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
array.forEach()	907.5 Ops/sec
array.reduce()	4001.7 Ops/sec
for of	56.4 Ops/sec
for	237.9 Ops/sec

Script Preparation code:

var array = [];
for (var i = 0; i < 10000; i++) {
  array[i] = i;
}

var firstTestResults = [];
var secondTestResults = [];
var thirdTestResults = [];
var fourthTestResults = [];

Tests:

array.forEach()
array.forEach((value) => { value = value + 10; if (value % 2 === 0) { firstTestResults.push(value); } });
array.reduce()
secondTestResults = array.reduce((acc, value) => { value = value + 10; if (value % 2 === 0) { acc.push(value); } return acc; }, []);
for of
for(value of array) { value = value + 10; if (value % 2 === 0) { thirdTestResults.push(value); } }
for
var value; for(let i = 0; i < array.length; i++){ value = array[i] + 10; if (value % 2 === 0) { fourthTestResults.push(value); } }

Run results for: array.forEach() vs .reduce vs for of vs for test2

array.forEach()

array.reduce()

for of

for