Run results for: instanceof vs hasOwnProperty

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
instanceOf	147178272.0 Ops/sec
hasOwnProperty	1670237184.0 Ops/sec

Script Preparation code:

var obj = {a: 1}

Tests: