Run results for: for loop vs. .map with size

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

for loop

27.6M/s

.map

21.4M/s

View exact numbers

Test name	Executions per second
✓ for loop	27,552,256 Ops/sec
.map	21,444,062 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
var newArray = array.map( i => manipulateFn(i));
for loop
var newArray = new Array(array.length); for (let i=0; i<array.length; i++) { //newArray.push(manipulateFn(array[i])); newArray[i]=manipulateFn(array[i]) }