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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

ES6 property (set)

1130.2M/s

Setter function

1085.7M/s

Directly set

1065.8M/s

ES6 property (get)

747.1M/s

Directly get

746.3M/s

Getter function

744.4M/s

View exact numbers

Test name	Executions per second
✓ ES6 property (set)	1,130,214,272 Ops/sec
Setter function	1,085,655,168 Ops/sec
Directly set	1,065,806,016 Ops/sec
ES6 property (get)	747,099,072 Ops/sec
Directly get	746,310,336 Ops/sec
Getter function	744,420,096 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