Run results for: set.has vs. array.includes 22333

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

lookup

202.9M/s

includes

110.3M/s

View exact numbers

Test name	Executions per second
✓ lookup	202,945,296 Ops/sec
includes	110,336,568 Ops/sec

Script Preparation code:

var a = Array(1000000).fill(undefined).map((_, i) => i);
var b = new Set(a)

Tests: