Run results for: in vs 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/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

15.6M/s

Object.prototype.hasOwnProperty

14.1M/s

Object.hasOwn

7.7M/s

View exact numbers

Test name	Executions per second
✓ in	15,561,238 Ops/sec
Object.prototype.hasOwnProperty	14,069,137 Ops/sec
Object.hasOwn	7,685,934 Ops/sec

Script Preparation code:

var obj = { a: 1, b: 2, c: 3, d: 4, e: 5 };

Tests: