Run results for: ES6 property (get/set) & getter/setter function vs direct access to object attribute (private and not)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 OPR/120.0.0.0

Browser: Opera 120

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
Public ES6 property (get)	6926938.0 Ops/sec
Public Getter function	7266457.0 Ops/sec
Public Directly get	7213970.5 Ops/sec
Public ES6 property (set)	110914032.0 Ops/sec
Public Setter function	114582808.0 Ops/sec
Public Directly set	114288568.0 Ops/sec
Private ES6 property (get)	7407931.0 Ops/sec
Private Getter function	7327321.5 Ops/sec
Private ES6 property (set)	115321712.0 Ops/sec
Private Setter function	119103520.0 Ops/sec

Script Preparation code:

class Private {
    #value = 0;
    constructor() {
        this.#value = 1
    }
    get value() {
        return this.#value
    }
    set value(x) {
        this.#value = x
    }
    getValue() {
        return this.#value
    }
    setValue(x) {
        this.#value = x
    }
}
class Public {
    value = 0;
    constructor() {
        this.value = 1
    }
    get value() {
        return this.value
    }
    set value(x) {
        this.value = x
    }
    getValue() {
        return this.value
    }
    setValue(x) {
        this.value = x
    }
}
var private = new Private();
var public = new Public();
var val = 0;

Tests:

Public ES6 property (get)
val = public.value;
Public Getter function
val = public.getValue();
Public Directly get
val = public.value;
Public ES6 property (set)
public.value = 1;
Public Setter function
public.setValue(1);
Public Directly set
public.value = 1;
Private ES6 property (get)
val = private.value;
Private Getter function
val = private.getValue();
Private ES6 property (set)
private.value = 1;
Private Setter function
private.setValue(1);

Run results for: ES6 property (get/set) & getter/setter function vs direct access to object attribute (private and not)

Public ES6 property (get)

Public Getter function

Public Directly get

Public ES6 property (set)

Public Setter function

Public Directly set

Private ES6 property (get)

Private Getter function

Private ES6 property (set)

Private Setter function