Run results for: instanceof vs typeof - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: 27 days ago

Test name	Executions per second
instanceof	103680360.0 Ops/sec
typeof	136510688.0 Ops/sec
typeof no function	114885192.0 Ops/sec
typeof and test attribute	109415144.0 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