Welcome to the Classes and Modules MCQs Page

Dive deep into the fascinating world of Classes and Modules with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Classes and Modules, a crucial aspect of JavaScript. In this section, you will encounter a diverse range of MCQs that cover various aspects of Classes and Modules, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within JavaScript.

Check out the MCQs below to embark on an enriching journey through Classes and Modules. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of JavaScript.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Classes and Modules. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Classes and Modules MCQs | Page 1 of 7

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Q1.

The behaviour of the instances present of a class inside a method is defined by

Method

Classes

Interfaces

Classes and Interfaces

Discuss

Answer: (b).Classes

Q2.

The keyword or the property that you use to refer to an object through which they were invoked is

from

this

object

Discuss

Answer: (c).this

Q3.

Consider the following code snippet :

var o = new F();
o.constructor === F

The output would be :

false

true

Discuss

Answer: (b).true

Q4.

The basic difference between JavaScript and Java is

There is no difference

Functions are considered as fields

Variables are specific

Functions are values, and there is no hard distinction between methods and fields

Discuss

Answer: (d).Functions are values, and there is no hard distinction between methods and fields

Q5.

The meaning for Augmenting classes is that

objects inherit prototype properties even in dynamic state

objects inherit prototype properties only in dynamic state

objects inherit prototype properties in static state

None of the mentioned

Discuss

Answer: (a).objects inherit prototype properties even in dynamic state

Q6.

The property of JSON() method is:

it can be invoked manually as object.JSON()

it will be automatically invoked by the compiler

it is invoked automatically by the JSON.stringify() method

it cannot be invoked in any form

Discuss

Answer: (c).it is invoked automatically by the JSON.stringify() method

Q7.

When a class B can extend another class A, we say that

A is the superclass and B is the subclass

B is the superclass and A is the subclass

Both A and B are the superclass

Both A and B are the subclass

Discuss

Answer: (a).A is the superclass and B is the subclass

Q8.

If A is the superclass and B is the subclass, then subclass inherting the superclass can be represented as

B=inherit(A);

B=A.inherit();

B.prototype=inherit(A);

B.prototype=inherit(A.prototype);

Discuss

Answer: (c).B.prototype=inherit(A);

Q9.

The snippet that filters the filtered set is

var t=new FilteredSet(s, {function(s) {return !(x instanceof Set);});

var t=new FilteredSet{function(s) {return !(x instanceof Set);});

var t=new FilteredSet(s, {function(s) {return (x instanceof Set);});

var t=new FilteredSet(s, {function(s) {return x;});

Discuss

Answer: (a).var t=new FilteredSet(s, {function(s) {return !(x instanceof Set);});

Q10.

The method that can be used to create new properties and also to modify the attributes of existing properties is

Object.defineProperty()

Object.defineProperties()

Both Object.defineProperty() and Object.defineProperties()

None of the mentioned

Discuss

Answer: (c).Both Object.defineProperty() and Object.defineProperties()

Page 1 of 7

Welcome to the Classes and Modules MCQs Page

Classes and Modules MCQs | Page 1 of 7

Explore more Topics under JavaScript

Basics of JavaScript

Arrays and Functions

Server Side and Client Side Scripting

Document Object Model and Event Handling

Graphics and Rendering

Performance Measures in JavaScript

Socket Programming with JavaScript

Parsing, Benchmarking and Logging

Invocation and Performance

Caching and Debugging

JavaScript Animation

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