Run results for: array includes vs object key

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.128 Safari/537.36

Browser: Chrome 89

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Includes	16082480.0 Ops/sec
Object[key]	14627650.0 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]