Run results for: reduce vs for loop vs for..of loop vs forEach 1000 count

Run details:

User agent: Mozilla/5.0 (Linux; Android 7.0; LG-M400) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.101 Mobile Safari/537.36

Browser: Chrome Mobile 87

Operating system: Android 7.0

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
reduce	6619.9 Ops/sec
for loop	86911.2 Ops/sec
forEach	13042.9 Ops/sec
for..of loop	80520.5 Ops/sec

Script Preparation code:

// Create an array of 1000 random intergers between 0 and 10000
var arrRandom = [];
for(var intCtr=0; intCtr<1000; intCtr++) {
  arrRandom.push(Math.floor(Math.random() * Math.floor(10000)));
}

function reduceCallback(accum, curr) {
	return accum+curr;
}

function doRedeuce(pArray) {
	return pArray.reduce(reduceCallback);
}
function doLoop(pArray) {
	var accum = 0;
	for(var intCtr=0, len=pArray.length; intCtr<len; intCtr++) {
		accum += pArray[intCtr];
	}
	return accum;
}
function doForLoop(pArray) {
	var accum = 0;
	for (var item of pArray) {
		accum += item;
	}
	return accum;
}
function doForEach(pArray) {
	var accum = 0;
	pArray.forEach(function(item) {
		accum += item;
	});
}

Tests:

reduce
var redeuceResult=0; redeuceResult = doRedeuce(arrRandom);
for loop
var loopResult=0; loopResult = doLoop(arrRandom);
forEach
var forEachResult=0 forEachResult = doForEach(arrRandom)
for..of loop
var loopResult=0; loopResult = doForLoop(arrRandom);

Run results for: reduce vs for loop vs for..of loop vs forEach 1000 count

A test adding 1000 random numbers

reduce

for loop

forEach

for..of loop