TypeScript 2.x By Example

Constructors

A constructor is used to initialize a new instance of a class. If we need to pass some starter values to the properties of a class at the time of object creation, we use the constructor. A constructor looks like any other function in a class with the exception of its name—it is always named as constructor. In the following example, we have a constructor of the Book class, which initializes its properties:

class Book {  public author: string;  public title: string;  public length: number;  constructor(author:string, title:string, length: number){  this.author = author;  this.title = title;  this.length = length;}  getFullTitle(): string {    return `${this.title} by ${this.author}`;  }}let typeScript = new Book("Sachin Ohri","TypeScript ...