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 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0

Browser: Firefox 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Object.hasOwnProperty

1831.7M/s

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

1768.6M/s

direct

1657.7M/s

Object in

1577.9M/s

Reflect.has()

44.1M/s

Array includes

1.2M/s

Array.indexOf

1.1M/s

View exact numbers

Test name	Executions per second
✓ Object.hasOwnProperty	1,831,670,016 Ops/sec
Object.prototype.hasOwnProperty.call(this.storeIndex, index)	1,768,620,800 Ops/sec
direct	1,657,676,800 Ops/sec
Object in	1,577,928,832 Ops/sec
Reflect.has()	44,088,600 Ops/sec
Array includes	1,166,969 Ops/sec
Array.indexOf	1,143,329 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)