Run results for: set.has vs. array.includes 1M

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36

Browser: Chrome 101

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
includes	795.9 Ops/sec
lookup	11296390.0 Ops/sec

Script Preparation code:

var a = [];
for (var i = 0; i < 1E6; i++)
  a[i] = i;
var b = new Set(a)

AخA
 
var a = [];for (var i = 0; i < 1E6; i++)  a[i] = i;var b = new Set(a)

Tests: