Run results for: JS Map + filter vs ForEach

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser: Chrome 113

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
1000 iterations	228491.6 Ops/sec
1 mil	244.5 Ops/sec

Script Preparation code:

function A(iterations) {
	return new Array(iterations).filter((_, idx) => idx%2 === 0).map((_, idx) => 'hi, i forgot why I am here');
}

function B(iterations) {
  const emptyArray = [];
  new Array(iterations).forEach((_, idx) => {
  	if(idx%2===0) {
    	emptyArray.push('hi, i forgot why I am here');
    }
  })
  return emptyArray;
}

Tests:

1000 iterations
A(1000); B(1000);
1 mil
A(1000000); B(1000000);

Run results for: JS Map + filter vs ForEach

Benchmark to test map + filter vs Foreach if

1000 iterations

1 mil