Run results for: instanceof vs typeof - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 9 months ago

Test name	Executions per second
instanceof	234244432.0 Ops/sec
typeof	1588678912.0 Ops/sec
typeof no function	1590427136.0 Ops/sec
typeof and test attribute	1590363904.0 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

;