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: 11 months ago

Test name	Executions per second
✓ costructor reverse	140,114,016 Ops/sec
costructor ?.	133,867,072 Ops/sec
typeof no function	131,283,264 Ops/sec
constructor	129,590,920 Ops/sec
typeof	124,148,936 Ops/sec
instanceof	100,553,664 Ops/sec
Object.prototype.toString.call	76,882,104 Ops/sec
Object.prototype.toString.call reverse	76,620,160 Ops/sec
constructor.name ?.	55,054,436 Ops/sec
constructor.name ?. reverse	52,068,700 Ops/sec

Test name

Executions per second

✓ costructor reverse

140,114,016 Ops/sec

costructor ?.

133,867,072 Ops/sec

typeof no function

131,283,264 Ops/sec

constructor

129,590,920 Ops/sec

typeof

124,148,936 Ops/sec

instanceof

100,553,664 Ops/sec

Object.prototype.toString.call

76,882,104 Ops/sec

Object.prototype.toString.call reverse

76,620,160 Ops/sec

constructor.name ?.

55,054,436 Ops/sec

constructor.name ?. reverse

52,068,700 Ops/sec

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