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 JavaScript code blocks in HTML

The samples we have just seen are an example of tight coupling between the generated HTML content (that contains JavaScript code in script blocks) on your web page, and the actual running JavaScript. You may argue, however, that this is a design flaw. If the web page needed an array of contact emails, then the JavaScript application should simply send an AJAX request to the server for the same information in JSON format. While this is a very valid argument, there are cases where including content in the rendered HTML is actually faster.

There used to be a time where the internet seemed to be capable of sending and receiving vast amounts of information in the blink of an eye. Bandwidth and speed on the internet were growing exponentially, and desktops were getting larger amounts of RAM and faster processors. As developers during this stage of...