Run results for: instanceof vs hasOwnProperty

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Browser: Chrome 87

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
instanceOf	3581573.8 Ops/sec
hasOwnProperty	9526307.0 Ops/sec

Script Preparation code:

var obj = {a: 1}

AخA
 
var obj = {a: 1}

Tests: