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: one year ago

hasOwnProperty

1670.2M/s

instanceOf

147.2M/s

View exact numbers

Test name	Executions per second
✓ hasOwnProperty	1,670,237,184 Ops/sec
instanceOf	147,178,272 Ops/sec

Script Preparation code:

var obj = {a: 1}

Tests: