Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.find vs Map.has

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser: Chrome 107

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object.hasOwnProperty	3764840.0 Ops/sec
Object in	3594199.0 Ops/sec
Array.indexOf	3393034.0 Ops/sec
direct	3690105.0 Ops/sec
Array find	10678.7 Ops/sec
Map has	4166314.2 Ops/sec

Script Preparation code:

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

Tests:

Object.hasOwnProperty
object.hasOwnProperty('something' + test)
Object in
('something' + test) in object
Array.indexOf
array.indexOf({id:'something' + test}) !== -1
direct
object['something' + test] === true
Array find
array.find(e => e.id === 'something' + test)
Map has
map.has('something' + test)

Run results for: Object.hasOwnProperty vs Object in vs Object[] vs Array.indexOf vs Array.find vs Map.has

Object.hasOwnProperty

Object in

Array.indexOf

direct

Array find

Map has