Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

How much do you know about JavaScript prototypes and constructors?

3 Questions

5 Views

How much do you know about JavaScript prototypes and constructors?

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is true about object-oriented languages?

They do not have a mechanism for encapsulation and structuring

They do not support inheritance

They have class constructors for encapsulation and structuring (correct)

They do not have class constructors

What is the purpose of a constructor function in JavaScript?

To consolidate properties and methods for a class of objects (correct)

To extend the functionality of an object

To trigger the creation of a new object

To allow for easy sharing of properties and methods between objects

What is the role of prototypes in JavaScript?

To create a new object

To allow for easy sharing of properties and methods between objects (correct)

To prevent inheritance between objects

To limit the functionality of an object

Study Notes

Prototypes and their properties can be inherited, creating a chain of inheritance.
Objects have access to the prototype of their parent.
A property search against an object includes its own prototype and its parent's prototype.
Object-oriented languages like Java and C++ have class constructors for encapsulation and structuring.
JavaScript offers a similar mechanism through constructor functions and the new operator.
JS does not have a true class definition.
The new operator in JS triggers the creation of a new object.
The constructor function consolidates properties and methods for a class of objects.
JS prototypes allow for easy sharing of properties and methods between objects.
Prototypes can be used to extend the functionality of an object.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge of JavaScript prototypes with this quiz! Learn about inheritance, property searches, constructor functions, and the new operator. Discover how JS prototypes allow for easy sharing of properties and methods between objects and how they can be used to extend object functionality. Perfect for those looking to deepen their understanding of object-oriented programming in JavaScript.