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 3 of 7

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Q21.

The maximum number of global symbols a module can define is

Discuss

Answer: (c).1

Q22.

To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

sets = sets.AbstractEnumerableSet.extend();

sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);

sets.SingletonSet = sets.extend(...);

sets = sets.extend(...);

Discuss

Answer: (b).sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);

Q23.

Consider the following statement

var Set = sets.Set;
var s = new Set(1,2,3);

What could be the efficiency quotient of the above two statements ?

The programmer imports at once the frequently used values into the global namespace

There is no efficiency quotient, the programmer tries to make it inefficient

The programmer needs to import the Sets everytime he wants to use it

All of the mentioned

Discuss

Answer: (a).The programmer imports at once the frequently used values into the global namespace

Q24.

The scope of a function is also called as

The function's scope

Module function

Modulated function

Private function

Discuss

Answer: (b).Module function

Q25.

Modules that have more than one item in their API can

Assign itself to a global variable

Invoke another module of the same kind

Return a namespace object

Invoke another module of the same kind

Discuss

Answer: (c).Return a namespace object

Q26.

The provides() function and the exportsobject are used to

Store the module's API and register their API

Store the module's API

None of the mentioned

Discuss

Answer: (a).Register the module's API and Store their API

Q27.

Consider the following code snippet

var sets = com.davidflanagan.collections.sets;

What is the programmer trying to do in the above code snippet?

Importing a single module

Importing a module partially

Importing a namespace

Importing the entire module

Discuss

Answer: (d).Importing the entire module

Q28.

The properties() method is a

Enumerable method

Non-enumerable method

Operational method

None of the mentioned

Discuss

Answer: (b).Non-enumerable method

Q29.

What can be done in order to avoid creation of global variables in JavaScript?

To use a method that defines all the variables

To use an object that has the reference to all the variables

To use an object as its namespace

To use global functions

Discuss

Answer: (c).To use an object as its namespace

Q30.

The "$" present in the RegExp object is called a

character

matcher

metacharacter

metadata

Discuss

Answer: (c).metacharacter

Page 3 of 7

Welcome to the Classes and Modules MCQs Page

Classes and Modules MCQs | Page 3 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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