Question 1

Which class requires you to use a constructor?

Accepted Answer

A)  Math 
B)  Number 
C)  Date 
D)  Array 
A)  Math 
B)  Number 
C)  Date 
D)  Array C

Question 2

Explain the difference between the Number and Math classes.

Accepted Answer

The Number class  contains methods for manipulating numbers and properties that contain  static values representing some of the numeric limitations in the JavaScript language (such  as the largest positive number that can be used in JavaScript. 
The Math class  contains methods and properties for performing mathematical calculations  in your programs.

Question 3

The value of an object property can be another object.

Accepted Answer

A) True 
 B)False  True

Question 4

Match between columns
                        Premises: Programming code and data that can be treated as an individual unit or component
Returns the square root of the specified value
A function assigned a name within a custom object
Type of array that enables you to add object properties incorporating numbers
The easiest way to declare a custom object
Returns a value rounded to the nearest integer
Elements required for a source program to communicate with an object
Converts a number to a string using the number of decimal places specified
A template, or blueprint, that serves as the basis for new objects
Creates a Date object containing the current date

Accepted Answer

The Answer of associative and literal and toFixed() and interface is...

Question 5

The ____ property is a built-in property that specifies the constructor from which an object was instantiated.

Accepted Answer

A)  experiment 
B)  try 
C)  prototype 
D)  test 
A)  experiment 
B)  try 
C)  prototype 
D)  test

Question 6

To delete a specific property in a custom object, you use the ____ operator.

Accepted Answer

A)  remove 
B)  cancel 
C)  erase 
D)  delete 
A)  remove 
B)  cancel 
C)  erase 
D)  delete

Question 7

The code (methods and statements)and data (variables and constants)contained in an encapsulated object are accessed through a(n)____.

Accepted Answer

A)  black box 
B)  view 
C)  interface 
D)  template 
A)  black box 
B)  view 
C)  interface 
D)  template

Question 8

Which method of the Math object rounds a value to the next lowest integer?

Accepted Answer

A) ceil() 
B) floor() 
C) max() 
D) min() 
A) ceil() 
B) floor() 
C) max() 
D) min()

Question 9

You can create a function that will be used as an object method by referring to any object properties it contains with the ____ reference.

Accepted Answer

A)  self 
B)  this 
C)  super 
D)  object 
A)  self 
B)  this 
C)  super 
D)  object

Question 10

Describe two ways of adding properties to an object.

Accepted Answer

1. You can declare properties within an

Question 11

To execute the same statement or command block for all the properties within a custom object, you can use the ____ statement.

Accepted Answer

A)  for/each 
B)  while/in 
C)  for/in 
D)  loop/in 
A)  for/each 
B)  while/in 
C)  for/in 
D)  loop/in

Question 12

Describe two ways of adding a method to an object.

Accepted Answer

There are two ways to add a method to an

Question 13

What is garbage collection and how is it performed in JavaScript apps?

Accepted Answer

Garbage collection refers to cleaning up

Question 14

You can append the name of any Number class method or property to the name of an existing variable that contains a(n)____________________ value.

Accepted Answer

The answer of You can append the name of any...

Question 15

How do you declare a property within an object literal?

Accepted Answer

To declare a  property within an object

Question 16

The ____ class contains methods and properties for performing mathematical calculations in your programs.

Accepted Answer

A)  Number 
B)  Integer 
C)  Function 
D)  Math 
A)  Number 
B)  Integer 
C)  Function 
D)  Math

Question 17

A particular instance of an object ____________________ its methods and properties from a class-that is, it takes on the characteristics of the class on which it is based.

Accepted Answer

The answer of A particular instance of an object ____________________...

Question 18

The term ____ refers to information contained within variables or other types of storage structures.

Accepted Answer

A)  data 
B)  object 
C)  class 
D)  instance 
A)  data 
B)  object 
C)  class 
D)  instance

Question 19

____ refers to cleaning up, or reclaiming, memory that is reserved by a program.

Accepted Answer

A)  Information hiding 
B)  Garbage collection 
C)  Data collection 
D)  Object hiding 
A)  Information hiding 
B)  Garbage collection 
C)  Data collection 
D)  Object hiding

Question 20

How can you get the full text of the day of the week based on information retrieved from a Date object?

Accepted Answer

If you need to return the full text of t

Which class requires you to use a constructor?

Explain the difference between the Number and Math classes.

The value of an object property can be another object.

The ____ property is a built-in property that specifies the constructor from which an object was instantiated.

To delete a specific property in a custom object, you use the ____ operator.

The code (methods and statements)and data (variables and constants)contained in an encapsulated object are accessed through a(n)____.

Which method of the Math object rounds a value to the next lowest integer?

You can create a function that will be used as an object method by referring to any object properties it contains with the ____ reference.

Describe two ways of adding properties to an object.

To execute the same statement or command block for all the properties within a custom object, you can use the ____ statement.

Describe two ways of adding a method to an object.

What is garbage collection and how is it performed in JavaScript apps?

You can append the name of any Number class method or property to the name of an existing variable that contains a(n)____________________ value.

How do you declare a property within an object literal?

The ____ class contains methods and properties for performing mathematical calculations in your programs.

A particular instance of an object ____________________ its methods and properties from a class-that is, it takes on the characteristics of the class on which it is based.

The term ____ refers to information contained within variables or other types of storage structures.

____ refers to cleaning up, or reclaiming, memory that is reserved by a program.

How can you get the full text of the day of the week based on information retrieved from a Date object?

Introduction to Javascript

Working With Functions Data Types and Operators

Building Arrays and Controlling Flow

Debugging and Error Handling

Working With the Document Object Model Dom and Dhtml

Enhancing and Validating Forms

Manipulating Data in Strings and Arrays

Managing State Information and Security

Programming for Mobile Devices and Touchscreens

Updating Web Pages With Ajax

Introduction to Jquery

Filters

Exam 7: Using Object Oriented Javascript

Which class requires you to use a constructor?

Explain the difference between the Number and Math classes.

The value of an object property can be another object.

The ____ property is a built-in property that specifies the constructor from which an object was instantiated.

To delete a specific property in a custom object, you use the ____ operator.

The code (methods and statements)and data (variables and constants)contained in an encapsulated object are accessed through a(n)____.

Which method of the Math object rounds a value to the next lowest integer?

You can create a function that will be used as an object method by referring to any object properties it contains with the ____ reference.

Describe two ways of adding properties to an object.

To execute the same statement or command block for all the properties within a custom object, you can use the ____ statement.

Describe two ways of adding a method to an object.

What is garbage collection and how is it performed in JavaScript apps?

You can append the name of any Number class method or property to the name of an existing variable that contains a(n)____________________ value.

How do you declare a property within an object literal?

The ____ class contains methods and properties for performing mathematical calculations in your programs.

A particular instance of an object ____________________ its methods and properties from a class-that is, it takes on the characteristics of the class on which it is based.

The term ____ refers to information contained within variables or other types of storage structures.

____ refers to cleaning up, or reclaiming, memory that is reserved by a program.

How can you get the full text of the day of the week based on information retrieved from a Date object?

Introduction to Javascript

Working With Functions Data Types and Operators

Building Arrays and Controlling Flow

Debugging and Error Handling

Working With the Document Object Model Dom and Dhtml

Enhancing and Validating Forms

Manipulating Data in Strings and Arrays

Managing State Information and Security

Programming for Mobile Devices and Touchscreens

Updating Web Pages With Ajax

Introduction to Jquery

Filters