ES5 oo sample.

es6-oo.js

// ES6 class
Class Vehicle {
  
  constructor(color) {
    this.color = color;
    this.speed = 0;
  }
  
  drive() {
    this.speed = 40;
  }
}

// ES6 inherit
class Car extends Vehicle {
  
  constructor(brand, color) {
    super(color);
    
    this.brand = brand;
    this.wheels = 4;
  }
}