Run results for: ES6 Class vs Prototype vs Object Literal v2 with Extends

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

ES6 Class

5.8M/s

Function Prototype

3.3M/s

Object Literal

325K/s

View exact numbers

Test name	Executions per second
✓ ES6 Class	5,823,741 Ops/sec
Function Prototype	3,289,226 Ops/sec
Object Literal	325,248 Ops/sec

Script Preparation code:

class BaseClass {
    constructor() {}
}

class Point extends BaseClass {
    constructor(x, y) {
        super();
        this.x = x;
        this.y = y;
    }

    add(point) {
        return new Point(this.x + point.x, this.y + point.y);
    }

    sub(point) {
        return new Point(this.x - point.x, this.y - point.y);
    }
}
var Point1 = Point;

function BaseConstructor() {
}

function Point2(x, y) {
    this.x = x;
    this.y = y;
}

Point2.prototype.add = function(point) {
    return new Point2(this.x + point.x, this.y + point.y);
}

Point2.prototype.sub = function(point) {
    return new Point2(this.x - point.x, this.y - point.y);
}

Object.setPrototypeOf(Object.setPrototypeOf(Point2, BaseConstructor).prototype, BaseConstructor.prototype);

function Point3(x, y) {
    return Object.setPrototypeOf({
        x,
        y,
        add: (point) => Point3(this.x + point.x, this.y + point.y),
        sub: (point) => Point3(this.x - point.x, this.y - point.y)
    }, BaseConstructor.prototype);
}

Tests:

ES6 Class
var p1 = new Point1(10, 10); var p2 = new Point1(10, -10); var sum = p1.add(p2); var dif = p1.sub(p2);
Function Prototype
var p1 = new Point2(10, 10); var p2 = new Point2(10, -10); var sum = p1.add(p2); var dif = p1.sub(p2);
Object Literal
var p1 = Point3(10, 10); var p2 = Point3(10, -10); var sum = p1.add(p2); var dif = p1.sub(p2);

Run results for: ES6 Class vs Prototype vs Object Literal v2 with Extends

Test the speed and memory usage using 3 different techniques for constructing class objects.

ES6 Class

Function Prototype

Object Literal