Run results for: Array.reduce vs for of loop with set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
reduce	48521.2 Ops/sec
for loop	52923.6 Ops/sec

Script Preparation code:

// Create an array of 1000 random intergers between 1 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.add(curr);
}

function doRedeuce(pArray) {
	return pArray.reduce(reduceCallback, new Set());
}
function doLoop(pArray) {
	var accum = new Set();
	for(const item of pArray) {
		accum.add(item);
	}
	return accum;
}

Tests:

reduce
var redeuceResult=0; redeuceResult = doRedeuce(arrRandom);
for loop
var loopResult=0; loopResult = doLoop(arrRandom);

Run results for: Array.reduce vs for of loop with set

A test summing 1000 random numbers, 1 - 10000

reduce

for loop