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Run results for: Object.prototype.hasOwnProperty vs obj.hasOwnProperty vs Object.hasOwn vs in

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36
Chrome 111
Mac OS X 10.15.7
Desktop
one year ago
Test name Executions per second
Object.prototype.hasOwnProperty 4628547.5 Ops/sec
obj.hasOwnProperty 8797926.0 Ops/sec
Object.hasOwn 4703880.5 Ops/sec
in obj 9656433.0 Ops/sec
Script Preparation code:
AخA
 
obj = {a: 42, b:66, c: 88}
Tests:

  • Object.prototype.hasOwnProperty

     
    Object.prototype.hasOwnProperty.call(obj, 'b');

  • obj.hasOwnProperty

     
    obj.hasOwnProperty('b');

  • Object.hasOwn

     
    Object.hasOwn(obj, 'b')

  • in obj

     
    'b' in obj