Run results for: instanceof vs typeof vs Object.prototype.toString.call vs constructor vs constructor.name

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser: Chrome 139

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
instanceof	100553664.0 Ops/sec
typeof	124148936.0 Ops/sec
typeof no function	131283264.0 Ops/sec
Object.prototype.toString.call	76882104.0 Ops/sec
Object.prototype.toString.call reverse	76620160.0 Ops/sec
constructor	129590920.0 Ops/sec
costructor reverse	140114016.0 Ops/sec
costructor ?.	133867072.0 Ops/sec
constructor.name ?.	55054436.0 Ops/sec
constructor.name ?. reverse	52068700.0 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'
Object.prototype.toString.call
Object.prototype.toString.call(obj) === "[object Object]"
Object.prototype.toString.call reverse
"[object Object]" === Object.prototype.toString.call(obj)
constructor
(!!obj) && (obj.constructor === Object)
costructor reverse
(!!obj) && (Object === obj.constructor)
costructor ?.
Object === obj?.constructor
constructor.name ?.
obj?.constructor.name === "Object"
constructor.name ?. reverse
"Object" === obj?.constructor.name