Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.includes

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; Pixel 4 XL) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/15.0 Chrome/90.0.4430.210 Mobile Safari/537.36

Browser: Chrome Mobile 90

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Object.hasOwnProperty	2910628.2 Ops/sec
Object in	2625434.5 Ops/sec
Array.indexOf	458790.2 Ops/sec
direct	2617775.2 Ops/sec
Array includes	460058.6 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)

Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.includes

Object.hasOwnProperty

Object in

Array.indexOf

direct

Array includes