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/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Setter function

30.1M/s

ES6 property (set)

30.0M/s

Directly set

29.7M/s

Getter function

14.5M/s

Directly get

14.5M/s

ES6 property (get)

14.4M/s

View exact numbers

Test name	Executions per second
✓ Setter function	30,093,604 Ops/sec
ES6 property (set)	29,970,686 Ops/sec
Directly set	29,682,492 Ops/sec
Getter function	14,533,694 Ops/sec
Directly get	14,466,155 Ops/sec
ES6 property (get)	14,432,677 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