Day5.Inheritance.js

// Objective

// In this challenge, we practice implementing inheritance and use JavaScript prototypes to add a new method to an existing prototype. Check out the attached Classes tutorial to refresh what we've learned about these topics.

// Task

// We provide the implementation for a Rectangle class in the editor. Perform the following tasks:

// Add an area method to Rectangle's prototype.
// Create a Square class that satisfies the following:
// It is a subclass of Rectangle.
// It contains a constructor and no other methods.
// It can use the Rectangle class' area method to print the area of a Square object.
// Locked code in the editor tests the class and method implementations and prints the area values to STDOUT.

/*
 *  Write code that adds an 'area' method to the Rectangle class' prototype
 */
Rectangle.prototype.area = function () {
    return this.h * this.w;
}

/*
 * Create a Square class that inherits from Rectangle and implement its class constructor
 */
class Square extends Rectangle {
    constructor(length) {
        super(length, length);
    }
};