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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Linux

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
Public ES6 property (get)	4812213.0 Ops/sec
Public Getter function	4809971.5 Ops/sec
Public Directly get	4843419.0 Ops/sec
Public ES6 property (set)	11361345.0 Ops/sec
Public Setter function	11327366.0 Ops/sec
Public Directly set	11264331.0 Ops/sec
Private ES6 property (get)	4806553.0 Ops/sec
Private Getter function	4822380.5 Ops/sec
Private ES6 property (set)	11339252.0 Ops/sec
Private Setter function	11312741.0 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