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

Run details:

User agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0

Browser: Firefox 52

Operating system: Windows XP

Device Platform: Desktop

Date tested: one year ago

.map

7.1M/s

for loop

4.3M/s

View exact numbers

Test name	Executions per second
✓ .map	7,084,668 Ops/sec
for loop	4,305,630 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]) }