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

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36
Chrome 68
Mac OS X 10.11.6
Desktop
6 years ago
Test name Executions per second
Object.hasOwnProperty 2976163.8 Ops/sec
Object in 1959964.1 Ops/sec
Array.indexOf 416823.2 Ops/sec
direct 2626519.0 Ops/sec
Array includes 428368.7 Ops/sec
Script Preparation code:
AخA
 
  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)