JS Class Expression Last Updated : 03 Dec, 2024 Comments Improve Suggest changes Like Article Like Report JavaScript class is a type of function declared with a class keyword, that is used to implement an object-oriented paradigm. Constructors are used to initialize the attributes of a class.There are 2 ways to create a class in JavaScript.Class DeclarationClass ExpressionIn this article, we will discuss class expression to declare classes in JavaScript and how to use them.Class ExpressionThe class expression is another way of creating classes in JavaScript and they can be named or unnamed. If named, the class name is used internally, but not outside of the class.SyntaxUsing named class expression:const variable_name = new Class_name { // class body}Using unnamed class expression:const variable_name = class{ //class body}Example 1: Named class expression JavaScript const Website = class Geek { constructor(name) { this.name = name; } websiteName() { return this.name; } }; const x = new Website("GeeksforGeeks"); console.log(x.websiteName()); OutputGeeksforGeeks Example 2: Unnamed class expression. JavaScript const Website = class { constructor(name) { this.name = name; } returnName() { return this.name; } }; console.log(new Website("GeeksforGeeks").returnName()); OutputGeeksforGeeks Key Features of Class ExpressionsAnonymous Classes: Just like anonymous functions, you can define a class without giving it a name. This can be useful for situations where you don’t need to reference the class elsewhere.Assigning Classes to Variables: You can assign a class to a variable, which allows you to instantiate objects from that class later. This is a common way of using class expressions.Self-Invoking Class Expressions: A class can be invoked immediately after it is created, which allows for the creation of new objects right away.Supported BrowserChrome 42Edge 13Firefox 45Opera 29Safari 7 Comment More infoAdvertise with us Next Article JS Class Expression utkarsh_kumar Follow Improve Article Tags : JavaScript Web Technologies javascript-basics Similar Reads ES6 Classes There are three concepts in Object-Oriented Programming Object, Class, and Methods. ES6 JavaScript supports Object-Oriented programming components. Object: A real-time object entity means the presentation of any entity in real-time.Class: It is the before the plan of creating any objects which is kn 3 min read TypeScript class A TypeScript class is a blueprint for creating objects, encapsulating properties (data) and methods (behavior) to promote organization, reusability, and readability.Supports inheritance, allowing one class to extend another and reuse functionality.Provides access modifiers (public, private, protecte 4 min read CoffeeScript Class CoffeeScript is an object-oriented programming language. Classes make large code readable, and easy to maintainable. Objects are instances of a class, a real-world entity that can be a person, place, string, list, etc. Data members are the variables declared inside the class. In this article, we wil 4 min read JavaScript Classes JavaScript classes (introduced in ES6) provide a structured way to create objects with shared properties and methods. 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