Run results for: For Each Vs Map Example Medium

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/82.0.4077.0 Safari/537.36

Browser: Chrome 82

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
.map	2540173.0 Ops/sec
.forEach	2637755.0 Ops/sec

Script Preparation code:

// Create sample data
var array = [];
array.forEach( i => array.push(i) );

var manipulateFn = num => {
	return num * 2 * 3;
}

Tests:

.map
var newArray = array.map( i => manipulateFn(i));
.forEach
var newArray = []; array.forEach( i => { newArray.push(manipulateFn(i)); });