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/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Setter function

150.3M/s

ES6 property (set)

149.2M/s

Directly set

147.9M/s

Getter function

14.0M/s

ES6 property (get)

14.0M/s

Directly get

13.8M/s

View exact numbers

Test name	Executions per second
✓ Setter function	150,318,784 Ops/sec
ES6 property (set)	149,215,248 Ops/sec
Directly set	147,854,544 Ops/sec
Getter function	14,012,122 Ops/sec
ES6 property (get)	13,958,323 Ops/sec
Directly get	13,845,217 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