Run results for: instanceof vs hasOwnProperty

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36

Browser: Chrome 81

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
instanceOf	4313460.0 Ops/sec
hasOwnProperty	11994620.0 Ops/sec

Script Preparation code:

var obj = {a: 1}

Tests: