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TypeScript 2.x By Example

TypeScript 2.x By Example

By : Sachin Ohri
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TypeScript 2.x By Example

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)
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Our First Application – Sports News Combinator

In the last chapter, we got a glimpse into the world of TypeScript. We looked at the features of TypeScript, which allow us to write more manageable, robust, and error-free code. TypeScript is a powerful language that provides the right balance between the flexibility of JavaScript and features, such as types and interfaces, which provide checks at design and compile time.

In this chapter, we will start by digging deeper into the feature set of TypeScript, and will also introduce the Angular framework. As with the subject of this book, we will use real-world examples to gain a better understanding of the features.

This chapter will focus on the following topics:

  • Sports News Combinator (SNC): We will start by introducing our first application and its feature set, which we will build.
  • Types in TypeScript: Types play an important role in TypeScript, and we will delve deeper into the various types available in TypeScript, type inference, and type declaration.
  • Classes in TypeScript: To be able to build robust web applications, we have classes. TypeScript implements classes to provide the object-oriented feature.
  • Introduction to Angular: The SNC application is built with TypeScript and Angular, so it is important to introduce Angular and its basic concepts, such as components and data binding.
  • Project setup, configuration, and code setup: In this section, we will start building our application by first looking at various ways to create single-page applications (SPAs) with Angular, and then using the Angular CLI to create our application's skeleton.
  • The architecture of SNC: We will look at the high-level architecture of SNC and discuss the various components that will be created.
  • Building our first component: We will be creating our first component, which will be used to display the news content on the page.

By the end of this chapter, we will have a simple working app with hardcoded data, as well as an understanding of types in TypeScript, and the basic fundamentals of Angular.

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