Run results for: instanceof vs typeof - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; SM-G973F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.87 Mobile Safari/537.36

Browser: Chrome Mobile 97

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
instanceof	3769477.5 Ops/sec
typeof	10725054.0 Ops/sec
typeof no function	5334849.5 Ops/sec
typeof and test attribute	5143698.5 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

;