Run results for: instanceof vs typeof - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; Pixel 6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.59 Mobile Safari/537.36

Browser: Chrome Mobile 102

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
instanceof	2907907.5 Ops/sec
typeof	9794514.0 Ops/sec
typeof no function	4869766.0 Ops/sec
typeof and test attribute	4834454.5 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

;