The Life Of Objects

Question 1

You can call a function, passing a specific ‘this’, using this method

Answer 1

call()

Question 2

Explain the difference between arrow functions and function declarations w.r.t. ‘this’

Answer 2

When the arrow function notation is used, it does not create its own ‘this’, and can see the outer scope’s ‘this’ instead.

Question 3

Another object that is used as a fallback source of properties

Answer 3

Prototype

Question 4

Function that allows you to instantiate objects using a specific prototype

Answer 4

create()

Question 5

Prototypes are useful for defining properties of which all instances of a class [..], such as methods

Answer 5

Share the same value

Question 6

Properties that differ for each instance cannot be stored in the [..]

Answer 6

Prototype

Question 7

Add this keyword before a function to treat it as a constructor

Answer 7

New

Question 8

The prototype object used when calling a constructor function is the value bound to the prototype [..] of the function

Answer 8

Property

Question 9

A plain, empty prototype derived from Object.prototype - this is the default [..] of all functions

Answer 9

Prototype property

Question 10

The prototype property is the way an object is [..] with a constructor

Answer 10

Associated

Question 11

Way of finding an object’s prototype

Answer 11

Object#getPrototypeOf()

Question 12

The prototype is like the [..] from which objects are created

Answer 12

Blueprint

Question 13

Currently, class declaration allow [..] to be added to the prototype

Answer 13

Only methods

Question 14

Using a [..] as a map is dangerous (due to inherited properties from Object.prototype)

Answer 14

Plain object

Question 15

Create an object without a prototype using this method call

Answer 15

Object.create(null)

Question 16

Work-around for using a plain object as a map (ignoring prototype’s properties)

Answer 16

Object#hasOwnProperty()

Question 17

Include symbol properties in object and class declarations by putting [..] around the property name

Answer 17

Square brackets