Run results for: For + Push vs Map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

Browser: Chrome 92

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
For + Push	201.0 Ops/sec
Map	4949.0 Ops/sec

Script Preparation code:

var arr = Array.from(new Array(10000)).map((_, index) => index);
var result = [];

AخA
 
var arr = Array.from(new Array(10000)).map((_, index) => index);var result = [];

Tests:

For + Push
for (let i = 0; i < arr.length; i++) { result.push(arr[i]) }
for (let i = 0; i < arr.length; i++) {
result.push(arr[i])
}
Map
result = arr.map((a) => a)
result = arr.map((a) => a)