javascript-prototypes

Question 1

What kind of inheritance does the JavaScript programming language use?

Answer 1

prototypal inheritance

Question 2

What is a prototype in JavaScript?

Answer 2

an object with methods that others objects can reference as a source

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

prototypal inheritance.
if a method cant be found in one layer it will search the next layer, then the next.
layer = prototype
PROTOTYPAL CHAINS

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

it looks at the prototype of that object