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 (X11; Linux x86_64; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Object.hasOwnProperty

945.5M/s

direct

941.4M/s

Object in

891.1M/s

Map has

790.9M/s

Array.indexOf

8.3M/s

Array find

45K/s

View exact numbers

Test name	Executions per second
✓ Object.hasOwnProperty	945,507,648 Ops/sec
direct	941,446,272 Ops/sec
Object in	891,083,392 Ops/sec
Map has	790,937,088 Ops/sec
Array.indexOf	8,324,756 Ops/sec
Array find	45,490 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)