Book Image

TypeScript 2.x By Example

By : Sachin Ohri
Book Image

TypeScript 2.x By Example

By: Sachin Ohri

Overview of this book

The TypeScript language, compiler, and open source development toolset brings JavaScript development up to the enterprise level. It allows you to use ES5, ES6, and ES7 JavaScript language features today, including classes, interfaces, generics, modules, and more. Its simple typing syntax enables building large, robust applications using object-oriented techniques and industry-standard design principles. This book aims at teaching you how to get up and running with TypeScript development in the most practical way possible. Taking you through two exciting projects built from scratch, you will learn the basics of TypeScript, before progressing to functions, generics, promises, and callbacks. Then, you’ll get to implement object-oriented programming as well as optimize your applications with effective memory management. You’ll also learn to test and secure your applications, before deploying them. Starting with a basic SPA built using Angular, you will progress on to building, maybe, a Chat application or a cool application. You’ll also learn how to use NativeScript to build a cool mobile application. Each of these applications with be explained in detail, allowing you to grasp the concepts fast. By the end of this book, you will have not only built two amazing projects but you will also have the skills necessary to take your development to the next level.
Table of Contents (11 chapters)

Trello – the board component

When we select any of our boards on the homepage, the application will redirect us to the selected board page. On the board page, we will have the board title and all the tasks and subtasks associated with the board.

To achieve this functionality, the following tasks need to be implemented:

  • We need to route to the board page for which we will use Angular routing.
  • Once routed, we need to know which board was selected on the homepage; this will be achieved by passing a parameter in routing.
  • On the board page, we need to fetch the respective tasks and subtasks. We will share Trello service to achieve this.
  • With the required data, we will need to display the tasks and their respective subtasks. For this, we will create the Task and SubTask components and pass the required data to them.
  • The communication between Task and SubTask will be handled...