Run results for: in vs typeof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134

Browser: Edge 17.17134

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
in operator	11361600.0 Ops/sec
typeof	48315160.0 Ops/sec

Script Preparation code:

var a = { test: 1 }

Tests: