Run results for: reduce vs for loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Whale/4.29.282.14 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

for loop

3.1M/s

forEach

2.7M/s

reduce

2.7M/s

View exact numbers

Test name	Executions per second
✓ for loop	3,112,817 Ops/sec
forEach	2,696,413 Ops/sec
reduce	2,685,954 Ops/sec

Script Preparation code:

var arrRandom = [];
for(var intCtr=0; intCtr<1000; intCtr++) {
  arrRandom.push(Math.floor(Math.random() * Math.floor(10000)));
}
function doRedeuce(pArray) {
	return pArray.reduce(function(accum, curr) {return accum+curr});
}
function doLoop(pArray) {
	var accum = 0;
	for(var intCtr=0; intCtr<pArray.length; intCtr++) {
		accum += pArray[intCtr];
	}
	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)

Run results for: reduce vs for loop

A test summing 1000 random numbers

reduce

for loop

forEach