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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

125.2M/s

Object.prototype.hasOwnProperty

63.4M/s

Object.hasOwn

55.5M/s

View exact numbers

Test name	Executions per second
✓ in	125,213,264 Ops/sec
Object.prototype.hasOwnProperty	63,428,716 Ops/sec
Object.hasOwn	55,485,684 Ops/sec

Script Preparation code:

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

Tests: