Simple implementation of Vector3 and Vector2 in Javascript

vectors.js

const Vector3 = class {

    x = 0;
    y = 0;
    z = 0;

    constructor(x, y, z) {
        this.x = x;
        this.y = y;
        this.z = z;
    }

    subtract(vector) {
        this.x -= vector.x;
        this.y -= vector.y;
        this.z -= vector.z
    }

    add(vector) {
        this.x += vector.x;
        this.y += vector.y;
        this.z += vector.z;
    }

    divide(vector) {
        this.x /= vector.x;
        this.y /= vector.y;
        this.z /= vector.z;
    }

    multiply(vector) {
        this.x *= vector.x;
        this.y *= vector.y;
        this.z *= vector.z;
    }
}

const vector = new Vector3(12, 12, 12);

const vector2 = new Vector3(6, 6, 6);

vector.divide(vector2);

console.log(vector)

const Vector2 = class {

    x = 0;
    y = 0;

    constructor(x, y, z) {
        this.x = x;
        this.y = y;
    }

    subtract(vector) {
        this.x -= vector.x;
        this.y -= vector.y;
    }

    add(vector) {
        this.x += vector.x;
        this.y += vector.y;
    }

    divide(vector) {
        this.x /= vector.x;
        this.y /= vector.y;
    }

    multiply(vector) {
        this.x *= vector.x;
        this.y *= vector.y;
    }
}

const vec2d = new Vector2(12, 12);

const vec2d2 = new Vector2(6, 6);

vec2d.divide(vec2d2);

console.log(vec2d)