Run results for: set.has vs. array.includes

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/121.0.6167.138 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 121

Operating system: iOS 17.2

Device Platform: Mobile

Date tested: 2 years ago

lookup

24.7M/s

includes

20.1M/s

View exact numbers

Test name	Executions per second
✓ lookup	24,720,444 Ops/sec
includes	20,133,524 Ops/sec

Script Preparation code:

var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = new Set(a)

Tests:

includes
return a.includes(9)
lookup
return b.has(9)