What are the differences between the resutls of Dog.prototype = Object.create(Animal.prototype) and Dog.prototype = {...Animal.prototype}?

Question

What are the differences between the resutls of Dog.prototype = Object.create(Animal.prototype) and Dog.prototype = {...Animal.prototype} ?

Answer 1

There are several differences, including:

• {...Animal.prototype} will create a separate prototype that lives its own life, unaware of property assignments that might be brought to Animal.prototype

• {...Animal.prototype} only copies enumerable properties, and as some methods might not be, you'll miss out on them.