Run results for: filter-foreach vs foreach+if

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Browser: Chrome 103

Operating system: Mac OS X 10.11.6

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
filter + foreach	2191.9 Ops/sec
foreach + if	10382.4 Ops/sec

Script Preparation code:

var arr = [];
for (var i = 0; i < 12345; i++) {
  arr[i] = i;
}

Tests:

filter + foreach
const filtered = arr.filter(i => i > 6172); filtered.forEach(i => i++); const count = filtered.length;
foreach + if
let count = 0; arr.forEach(i => { if (i > 6172) { count++; i++; } });