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)

NativeScript UI elements

In our application, we used many of the NativeScript UI elements that replace our existing HTML code. Here, we will go through some of the other UI elements available in the NativeScript framework to help us build a more robust UI:

  • TextField: The TextField control is used as an Input field in NativeScript. It has properties such as hint, maxlength, and keyboard type, which allow us to configure the input format on the device.
  • TextView: This control is an extension of the TextField control, wherein it allows users to enter multiline text.
  • Picker controls: There are three picker controls provided by NativeScript, DatePicker, TimePicker, and ListPicker. These controls provide a form of list view to allow the user to select a value.
  • Layouts: We have seen the StackLayout control used in our application; NativeScript provides many other layout controls to customize...