Javascript-prototypes

Question 1

What kind of inheritance does the JavaScript programming language use?

What is a prototype in JavaScript?

Answer 1

1. prototypal (prototype based inheritance)

2. an object that has functionality that other object can appoint to

Question 2

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

Answer 2

1.it follows the prototype chain to get the method.

Question 3

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

Answer 3

1.In the object prototype, and if it doesn’t have it then it goes up to that object prototype. (prototype chain all the way up!)