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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Directly set

37.7M/s

ES6 property (set)

37.5M/s

Setter function

33.2M/s

Directly get

17.0M/s

Getter function

16.9M/s

ES6 property (get)

16.1M/s

View exact numbers

Test name	Executions per second
✓ Directly set	37,692,288 Ops/sec
ES6 property (set)	37,513,860 Ops/sec
Setter function	33,224,700 Ops/sec
Directly get	16,971,224 Ops/sec
Getter function	16,897,900 Ops/sec
ES6 property (get)	16,078,319 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