js custom methods

Question 1

What is a method?

Answer 1

a function which is a property of an object

Question 2

How can you tell the difference between a method definition and a method call?

Answer 2

they look very different:
method definition is defined inside the object
method call has object.method();

Question 3

Describe method definition syntax (structure).

Answer 3

const myObject = {
 myMethod: function (args) {
  //code
 }
}

Question 4

Describe method call syntax (structure).

Answer 4

myObject.myMethod();

Question 5

How is a method different from any other function?

Answer 5

It’s inside of an object

Question 6

What is the defining characteristic of Object-Oriented Programming?

Answer 6

objects can contain both data (as properties) and behavior (as methods)

Question 7

What are the four “principles” of Object-Oriented Programming?

Answer 7

Abstraction: simplification of a greater idea into something like an object that describes the whole with less information

Encapsulation: bundling data with methods in objects, keeping them separated from the rest of code

Inheritance: mechanism of basing an object or class on another object or class, retaining similar implementation

Polymorphism: use of a single interface with different types

Question 8

What is “abstraction”?

Answer 8

Simplification of a larger system into an interface with only required information. Creating your very own black box

Question 9

What does API stand for?

Answer 9

application programming interface

Question 10

What is the purpose of an API?

Answer 10

give programmers a way to interact with a system in a simplified and consistent fashion.