What do you understand by classes in Typescript? List some features of classes.

We all know that Typescript is a type of object-oriented JavaScript and supports object-oriented programming features like- classes, interfaces, etc. Here, a class in terms of object-oriented programming is a blueprint for creating objects. A class is used to encapsulate data for the object. A built-in support is provided by Typescript for this feature. The “class” keyword is used to declare a class in Typescript.
Example

 

class Greeter {
    greeting: string;
    constructor (message: string) {
        this.greeting = message;
    }
    greet() {
        return "Hello, " + this.greeting;
    }
}  

Some features of a class are-

• Encapsulation i.e. creation of self-contained modules that bind processing functions to the data, takes place.
• Classes are created in hierarchies and with the help of inheritance; the features of one class can be used in the other.
• Polymorphism takes place.
• Abstraction