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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Set.has

38.3M/s

Object access

36.5M/s

Array.includes

27.6M/s

View exact numbers

Script Preparation code:

var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = new Set(a);
var c = Object.fromEntries(a.map(e => [e, true]));

Tests: