Run results for: Reduce vs Filter and Map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser: Chrome 139

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

Reduce

19K/s

Filter and Map

12K/s

View exact numbers

Test name	Executions per second
✓ Reduce	19,065 Ops/sec
Filter and Map	11,652 Ops/sec

Script Preparation code:

var arr = Array(10_000).fill(undefined).map((_, index) => index + 1)

Tests:

Filter and Map
const result = arr.filter((number) => number % 2 === 0).map((number) => number + 1)
Reduce
const result = arr.reduce((accumulator, number) => { if (number % 2 === 0) { accumulator.push(number + 1); } return accumulator; }, []);