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

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:129.0) Gecko/20100101 Firefox/129.0

Browser: Firefox 129

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

ES6 property (set)

655.3M/s

Setter function

603.1M/s

Directly set

570.6M/s

Getter function

468.8M/s

ES6 property (get)

409.9M/s

Directly get

362.9M/s

View exact numbers

Test name	Executions per second
✓ ES6 property (set)	655,299,520 Ops/sec
Setter function	603,097,984 Ops/sec
Directly set	570,554,112 Ops/sec
Getter function	468,817,856 Ops/sec
ES6 property (get)	409,875,360 Ops/sec
Directly get	362,865,760 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