Run results for: for loop vs. .map (6/17/2026)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:148.0) Gecko/20100101 Firefox/148.0

Browser: Firefox 148

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

.map

18.7M/s

for loop

10.3M/s

View exact numbers

Test name	Executions per second
✓ .map	18,693,144 Ops/sec
for loop	10,320,423 Ops/sec

Script Preparation code:

// Create sample data
var array = [1,2,3,4,5,6,7,8,9,0];

var manipulateFn = num => {
	return num * 2 * 3;
}

Tests:

.map
const newArray = array.map(i => manipulateFn(i));
for loop
const newArray = []; for (let index = 0; index < array.length; index++) { newArray.push(manipulateFn(array[index])); }