Prototype & Prototypal Inheritance

What inheritance pattern does this code demonstrate?

function Shape() {}
Shape.prototype.draw = function() { return 'Drawing a shape'; };

function Circle() {}
Circle.prototype = Object.create(Shape.prototype);
Circle.prototype.draw = function() { return 'Drawing a circle'; };

Classical inheritance
Prototypal inheritance
This code demonstrates prototypal inheritance: 1) Circle.prototype inherits from Shape.prototype via Object.create(), 2) Object.create() establishes the proper prototype chain without executing constructors, 3) Circle overrides the draw method while maintaining the inheritance chain, 4) Properties are looked up first in Circle.prototype, then in Shape.prototype, 5) This pattern enables method overriding while preserving access to parent methods, 6) It's the fundamental inheritance mechanism in JavaScript, different from classical inheritance in languages like Java or C++.
Functional inheritance
Mixin pattern

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