Run results for: Set has vs object key

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:92.0) Gecko/92.0 Firefox/92.0

Browser: Firefox Mobile 92

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Includes	36370030.0 Ops/sec
Object[key]	736977400.0 Ops/sec
Set.has	19996150.0 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