Run results for: ES6 property (get/set) & getter/setter function & direct access to object attribute

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0

Browser: Chrome 121

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Setter function

16.7M/s

Directly set

16.6M/s

ES6 property (set)

16.5M/s

Directly get

7.3M/s

Getter function

7.3M/s

ES6 property (get)

7.2M/s

View exact numbers

Test name	Executions per second
✓ Setter function	16,654,591 Ops/sec
Directly set	16,646,022 Ops/sec
ES6 property (set)	16,530,261 Ops/sec
Directly get	7,337,647 Ops/sec
Getter function	7,274,785 Ops/sec
ES6 property (get)	7,180,564 Ops/sec

Script Preparation code:

class Class {
    constructor () {
        this._val = 1
    }
    get value() { return this._val }
    set value(x) { this._val = x }
    getValue() { return this._val }
    setValue(x) { this.val = x }
}
var cls = new Class()
var wtf

Tests:

ES6 property (get)
wtf = cls.value
Getter function
wtf = cls.getValue()
Directly get
wtf = cls._val
ES6 property (set)
cls.value = 1
Setter function
cls.setValue(1)
Directly set
cls._val = 1