Run results for: instanceof vs typeof

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/117.0.5938.117 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 117

Operating system: iOS 17.0

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
instanceof	15103481.0 Ops/sec
typeof	39441192.0 Ops/sec
typeof no function	20727600.0 Ops/sec
typeof and test attribute	20204828.0 Ops/sec

Script Preparation code:

var obj = {a:2};

Tests:

instanceof
obj instanceof Object
typeof
typeof obj === 'object'
typeof no function
typeof obj === 'object' && typeof obj !== 'function'
typeof and test attribute
typeof obj === 'object' && obj.a

Run results for: instanceof vs typeof

instanceof

typeof

typeof no function

typeof and test attribute