Run results for: Set has vs object key

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Set.has

32.9M/s

Includes

31.0M/s

Object[key]

30.2M/s

View exact numbers

Test name	Executions per second
✓ Set.has	32,932,074 Ops/sec
Includes	31,003,684 Ops/sec
Object[key]	30,244,836 Ops/sec

Script Preparation code:

var obj = (new Array(1000)).fill(null).reduce((prev, newVal) => {prev[Math.random() + ''] = Math.random() + ''; return prev; }, { sausage: 'tst' });
var array = Object.keys(obj);
var set = new Set(array);

Tests:

Includes
array.includes('sausage')
Object[key]
obj['sausage']
Set.has
set.has('saudage')

Run results for: Set has vs object key

performance comparison of ways to find if an array contains a value

Includes

Object[key]

Set.has