Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.includes vs Reflect.has()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.60 Safari/537.36

Browser: Chrome 100

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object.hasOwnProperty	4929678.0 Ops/sec
Object in	4332323.0 Ops/sec
Array.indexOf	513149.3 Ops/sec
direct	4305170.5 Ops/sec
Array includes	452438.5 Ops/sec
Object.prototype.hasOwnProperty.call(this.storeIndex, index)	2790061.2 Ops/sec
Reflect.has()	2392633.0 Ops/sec

Script Preparation code:

  var object = {},
      array = [],
      i, test = 1000;
  
  for (i = 0; i < 1000; i++) {
   object['something' + i] = true;
   array.push('something' + i);
  }

Tests:

Object.hasOwnProperty
object.hasOwnProperty('something' + test)
Object in
('something' + test) in object
Array.indexOf
array.indexOf('something' + test) !== -1
direct
object['something' + test] === true
Array includes
array.includes('something' + test)
Object.prototype.hasOwnProperty.call(this.storeIndex, index)
Object.prototype.hasOwnProperty.call(object, 'something' + test)
Reflect.has()
Reflect.has(object, 'something' + test)

Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.includes vs Reflect.has()

Object.hasOwnProperty

Object in

Array.indexOf

direct

Array includes

Object.prototype.hasOwnProperty.call(this.storeIndex, index)

Reflect.has()