javascript prototypes

Question 1

What kind of inheritance does the JavaScript programming language use?

Answer 1

JavaScript includes a specific kind of inheritance known as prototype-based (or prototypal) inheritance. JavaScript objects give certain behaviors (methods) or data (properties) to other objects

Question 2

What is a prototype in JavaScript?

Answer 2

a JavaScript prototype is simply an object that contains properties and (predominantly) methods that can be used by other objects

Question 3

How is it possible to call methods on strings, arrays, and numbers even though those methods don’t actually exist on strings, arrays, and numbers?

Answer 3

by having those methods borrowed from a prototype, or “delegated” to the prototype

Question 4

If an object does not have it’s own property or method by a given key, where does JavaScript look for it?

Answer 4

the prototype

Question 5

does this ‘object’ need to be capitalized? what is it called?

Object.setPrototypeOf(yakko, wernerPrototype);

Answer 5

Yes!

it’s called big ‘o’ object