Run results for: array includes vs object key - 1

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; STF-L09) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Mobile Safari/537.36

Browser: Chrome Mobile 91

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Includes	1030.4 Ops/sec
Object[key]	3078006.0 Ops/sec

Script Preparation code:

var obj = (new Array(100000)).fill(null).reduce((prev, newVal, index) => {
  if (index === 55555) {
    prev['sausage'] = 'tst';
    return prev;
  }
 prev[Math.random() + ''] = Math.random() + ''; 
 return prev;
}, {});
var array = Object.keys(obj);

Tests:

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

Run results for: array includes vs object key - 1

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

Includes

Object[key]