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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Browser: Chrome 144

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Object.hasOwn	22.2 Ops/sec
Object.prototype.hasOwnProperty	33.2 Ops/sec

Script Preparation code:

window.myObject = {};
window.mySet = new Set();
for (let i = 1; i < 10_000_000; i++) {
  window.myObject[i] = null;
  window.mySet.add(i);
}

Tests:

Object.hasOwn
for (let i = 10_000_000; i > 0; i--) { Object.hasOwn(window.myObject, i); }
Object.prototype.hasOwnProperty
for (let i = 10_000_000; i > 0; i--) { window.myObject.hasOwnProperty(i); }