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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

obj.hasOwnProperty

7.8M/s

Object.hasOwn

4.3M/s

Object.prototype.hasOwnProperty

4.2M/s

View exact numbers

Test name	Executions per second
✓ obj.hasOwnProperty	7,778,484 Ops/sec
Object.hasOwn	4,267,768 Ops/sec
Object.prototype.hasOwnProperty	4,184,256 Ops/sec

Script Preparation code:

obj = {a: 42, b:66, c: 88}

Tests: