Run results for: instanceof vs typeof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.104 Whale/3.13.131.36 Safari/537.36

Browser: Chrome 98

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
instanceof	5010073.0 Ops/sec
typeof	15215796.0 Ops/sec
typeof no function	7588400.5 Ops/sec
typeof and test attribute	7489394.0 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