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)

The current state of JavaScript

If you have developed any web applications and written more than a few lines of code in JavaScript, you will have encountered one of the many quirks of JavaScript. Web application development has gone through some major changes in the last decade or so. We have been writing more and more complex applications that need to have a highly interactive user interface. There have been libraries which have helped us along the way, such as jQuery, Knockout, and so on, but they can only go so far to manage an ever-expanding code base.

Applications written in JavaScript tend to become cluttered and difficult to maintain after a few hundred lines of code if we do not follow best practices and patterns. To solve this problem, many JavaScript frameworks have come along, such as Durandal, Backbone, React, and Angular, which have helped manage these complexities...