Run results for: Array.reduce vs for loop vs Array.forEach vs for of loop - 10000

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/67.0.3396.62 Chrome/67.0.3396.62 Safari/537.36

Browser: Chromium 67

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
reduce	6154.5 Ops/sec
for loop	68699.2 Ops/sec
forEach	10758.1 Ops/sec
for of loop	18753.6 Ops/sec

Script Preparation code:

//Create an array of 10000 random intergers between 1 and 10000
var arrRandom = [];
for(var intCtr=0; intCtr<10000; intCtr++) {
  arrRandom.push(Math.floor(Math.random() * Math.floor(10000)));
}

function reduceCallback(accum, curr) {
	return accum+curr;
}

function doReduce(pArray) {
	return pArray.reduce(reduceCallback);
}
function doForLoop(pArray) {
	var accum = 0;
	var arrLength = pArray.length;
	for(var intCtr=0; intCtr<arrLength; intCtr++) {
		accum += pArray[intCtr];
	}
	return accum;
}
function doForOfLoop(pArray) {
	var accum = 0;
	for(var value of pArray) {
		accum += value;
	}
	return accum;
}
function doForEach(pArray) {
	var accum = 0;
	pArray.forEach(function(item) {
		accum += item;
	});
}

Tests:

reduce
var redeuceResult=0; redeuceResult = doReduce(arrRandom);
for loop
var loopResult=0; loopResult = doForLoop(arrRandom);
forEach
var forEachResult=0 forEachResult = doForEach(arrRandom)
for of loop
var forOfResult=0 forOfResult = doForOfLoop(arrRandom)

Run results for: Array.reduce vs for loop vs Array.forEach vs for of loop - 10000

A test summing 1000 random numbers, 1 - 10000

reduce

for loop

forEach

for of loop