Run results for: Set.has vs. Array.includes

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 OPR/73.0.3856.424

Browser: Opera 73

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Array	13912.6 Ops/sec
Set	4072498.0 Ops/sec

Script Preparation code:

const len = 100000;
var a = Array.from({length: len}, (_, i) => i);
var b = new Set(a);
var c = Math.floor(Math.random() * len);

Tests: