Run results for: concat() vs spread (...) for combining two arrays

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Mobile Safari/537.36 EdgA/143.0.0.0

Browser: Chrome Mobile 143

Operating system: Android

Device Platform: Mobile

Date tested: 6 months ago

spread

25.4M/s

concat()

11.0M/s

View exact numbers

Test name	Executions per second
✓ spread	25,384,830 Ops/sec
concat()	10,960,508 Ops/sec

Tests:

concat()
const a = [1, 2, 3, 4]; const b = [5, 6, 7, 8]; const result = a.concat(b);
spread
const a = [1, 2, 3, 4]; const b = [5, 6, 7, 8]; const result = [...a, ...b];