Run results for: comparing for vs map vs forEach methods

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0

Browser: Firefox 63

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 5 years ago

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:

for
var newArray = []; for(var i=0; i < array.length; i++) { newArray.push(manipulateFn(i)); };
map
var newArray = array.map( i => manipulateFn(i));
forEach
var newArray = []; array.forEach( i => { newArray.push(manipulateFn(i)); });