Run results for: array includes vs object key

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.2.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Includes	18264770.0 Ops/sec
Object[key]	22491620.0 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);

Tests:

Includes
array.includes('sausage')
Object[key]
obj['sausage']

Run results for: array includes vs object key

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

Includes

Object[key]