Learn React with TypeScript 3

Basic classes

Classes have lots of features. So, in this section we'll look at the basic features of a class. We use the class keyword followed by the class name, followed by the definition of the class.

Let's look at this in more depth with the following example:

1. We could use a class to define the Product type we previously defined as an interface and as a type alias:

class Product {  name: string;  unitPrice: number;}

2. We create an instance of our Product class by using the new keyword followed by the class name and parentheses. We then go on to interact with the class, setting property values or calling methods:

const table = new Product();table.name = "Table"; table.unitPrice = 500;

Notice that when we use this approach we don't need ...