JavaScript Classes are templates for JavaScript Objects. Use the keyword class to create a class. Always add a method named constructor(): constructor () { ... The example above creates a class named "Car". The class has two initial properties: "name" and "year". A JavaScript class is not an object. It is a template for JavaScript objects.

Apr 2, 2025 · Classes are a template for creating objects. They encapsulate data with code to work on that data. Classes in JS are built on prototypes but also have some syntax and semantics that are unique to classes. For more examples and explanations, see the Using classes guide.

In JavaScript, classes are mainly an abstraction over the existing prototypical inheritance mechanism — all patterns are convertible to prototype-based inheritance. Classes themselves are normal JavaScript values as well, and have their own prototype chains.

Feb 18, 2025 · In this article, we'll take a step-by-step approach, showing you how object-oriented programming is implemented in JavaScript with objects and constructor functions, and clearly illustrate why understanding and using classes will make you a more versatile and effective JavaScript developer, even if you’re used to writing everything in functions.

6 days ago · JavaScript classes (introduced in ES6) provide a structured way to create objects with shared properties and methods. They support inheritance, encapsulation, and modularity, making it easier to write object-oriented code.

Apr 11, 2025 · Creating classes in JavaScript. Creating constructors in JavaScript. Inheritance and encapsulation in JavaScript. You can declare a class using the class keyword. Here's a class declaration for our Person from the previous article: name; constructor(name) { this.name = name; } introduceSelf() { . console.log(`Hi! I'm ${this.name}`); } }

Dec 13, 2021 · So in this guide, you will learn about classes in JavaScript, inheritance, abstract functions, how to use keywords such as super and extend s, static keywords, and private members of classes. Let's dive in. What Are Classes in JavaScript? Before you start reading this blog post you should have a basic understanding of the following topics:

Learn how to master JavaScript classes and inheritance with ease! In this tutorial, we'll break down the complex concepts of object-oriented programming in J...

Summary: in this tutorial, you’ll learn about the JavaScript class and how to use it effectively. A JavaScript class is a blueprint for creating objects. A class encapsulates data and functions that manipulate data. Unlike other programming languages such as Java and C#, JavaScript classes are syntactic sugar over the prototypal inheritance.

May 20, 2024 · Classes let you privatize your data while providing users indirect access to it. It is an excellent way to prevent direct access to your constructor’s data. This handbook aims to show you exactly how classes work in JavaScript. We will also discuss class fields and the super keyword. What is a JavaScript Class? Why Classes in JavaScript?