Run results for: typeof vs instanceof Function

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.5 Safari/605.1.15

Browser: Safari 26

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one month ago

typeof

1027.6M/s

instanceof

940.6M/s

View exact numbers

Test name	Executions per second
✓ typeof	1,027,634,880 Ops/sec
instanceof	940,647,360 Ops/sec

Script Preparation code:

var f = () => {};

Tests: