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/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Setter function

12.3M/s

Directly set

12.2M/s

ES6 property (set)

10.7M/s

ES6 property (get)

5.4M/s

Getter function

5.3M/s

Directly get

4.6M/s

View exact numbers

Test name	Executions per second
✓ Setter function	12,252,430 Ops/sec
Directly set	12,234,852 Ops/sec
ES6 property (set)	10,730,461 Ops/sec
ES6 property (get)	5,415,802 Ops/sec
Getter function	5,253,271 Ops/sec
Directly get	4,645,104 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