Book Image

Mastering TypeScript 3 - Third Edition

By : Nathan Rozentals
Book Image

Mastering TypeScript 3 - Third Edition

By: Nathan Rozentals

Overview of this book

TypeScript is both a language and a set of tools to generate JavaScript. It was designed by Anders Hejlsberg at Microsoft to help developers write enterprise-scale JavaScript. Starting with an introduction to the TypeScript language, before moving on to basic concepts, each section builds on previous knowledge in an incremental and easy-to-understand way. Advanced and powerful language features are all covered, including asynchronous programming techniques, decorators, and generics. This book explores many modern JavaScript and TypeScript frameworks side by side in order for the reader to learn their respective strengths and weaknesses. It will also thoroughly explore unit and integration testing for each framework. Best-of-breed applications utilize well-known design patterns in order to be scalable, maintainable, and testable. This book explores some of these object-oriented techniques and patterns, and shows real-world implementations. By the end of the book, you will have built a comprehensive, end-to-end web application to show how TypeScript language features, design patterns, and industry best practices can be brought together in a real-world scenario.
Table of Contents (16 chapters)
Free Chapter
TypeScript Tools and Framework Options

Using React

Another TypeScript framework that we will take a look at in this chapter is React. The React framework is open source, and was originally developed by Facebook. React uses a specific inline syntax for combining HTML templates and JavaScript code in the same file, named JSX. There are no string templates to load, like Backbone, or HTML snippets that are in a separate file, like Angular or Aurelia. In React, all templates are mixed in with normal JavaScript code, using an HTML-like syntax. As a simple example of this syntax, consider the following code:

render() { 
    return <div>Hello <span>React</span></div>; 

Here, we have a standard TypeScript function named render. Within this function, we are returning what looks like native HTML, with a <div> and a child <span>. Note that there are no quotation marks around these HTML elements...