Run results for: Filter + ForEach vs ForEach with If

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.3.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Filter + ForEach	36526.7 Ops/sec
ForEach with If	79943.6 Ops/sec

Script Preparation code:

var data = Array(10000).fill(0).map((_, i) => i);

Tests:

Filter + ForEach
data.filter(v => v % 2 === 0).forEach(value => { Math.random(); });
ForEach with If
data.forEach(value => { if (value % 2 === 0) { Math.random(); } });