JavaScript 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

a predefined JavaScript method. It can be used to invoke (call) a method with an owner object as an argument (parameter)

whatever the object is an name the methos and then use preened to call the method

Question 3

Describe method definition syntax (structure).

Answer 3

property on an object with parameter

Question 4

Describe method call syntax (structure).

Answer 4

variable = {
method: function() {
…..
}
}

Question 5

How is a method different from any other function?

Answer 5

a method is associated with an object, while a function is not

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, encapsulation, inheritance, polymorphism

Question 8

What is “abstraction”?

Answer 8

being able to work with (possibly) complex things in simple ways

Question 9

What does API stand for?

Answer 9

application programming interface

Question 10

What is the purpose of an API?

Answer 10

a way for two or more computer programs to communicate with each other