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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0

Browser: Firefox 149

Operating system: Linux

Device Platform: Desktop

Date tested: 3 months ago

Object.hasOwn

1/s

Object.prototype.hasOwnProperty

1/s

View exact numbers

Test name	Executions per second
✓ Object.hasOwn	1 Ops/sec
Object.prototype.hasOwnProperty	1 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); }