Run results for: Function: typeof vs instanceof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36

Browser: Chrome 63

Operating system: Mac OS X 10.13.2

Device Platform: Other

Date tested: 2025 years ago

Test name	Executions per second
instanceof	0.0 Ops/sec
typeof	1837357.0 Ops/sec

Script Preparation code:

const f = () => {};
let i = 0;

Tests: