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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Directly set

15.5M/s

ES6 property (set)

15.5M/s

Setter function

15.2M/s

Getter function

6.6M/s

Directly get

6.6M/s

ES6 property (get)

6.4M/s

View exact numbers

Test name	Executions per second
✓ Directly set	15,486,359 Ops/sec
ES6 property (set)	15,455,352 Ops/sec
Setter function	15,222,536 Ops/sec
Getter function	6,599,510 Ops/sec
Directly get	6,588,515 Ops/sec
ES6 property (get)	6,442,848 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