Run results for: Filter and Map vs Reduce

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Filter and Map

61K/s

Reduce

2K/s

View exact numbers

Test name	Executions per second
✓ Filter and Map	60,512 Ops/sec
Reduce	2,412 Ops/sec

Script Preparation code:

var array = Array.from(Array(1000)).map((x, i) => ({ count: i, isOdd: Boolean(i % 2) }))

Tests:

Filter and Map
array.filter(x => x.isOdd).map(x => ({ stringCount: x.count.toString() }))
Reduce
array.reduce((acc, x) => x.isOdd ? [...acc, { stringCount: x.count.toString() }] : acc, [])