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

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:138.0) Gecko/138.0 Firefox/138.0

Browser: Firefox Mobile 138

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Directly set

1256.4M/s

Setter function

1173.3M/s

ES6 property (set)

1141.3M/s

ES6 property (get)

968.4M/s

Directly get

962.8M/s

Getter function

874.5M/s

View exact numbers

Test name	Executions per second
✓ Directly set	1,256,388,352 Ops/sec
Setter function	1,173,319,936 Ops/sec
ES6 property (set)	1,141,256,704 Ops/sec
ES6 property (get)	968,365,888 Ops/sec
Directly get	962,790,272 Ops/sec
Getter function	874,507,456 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