Book Image

Modern JavaScript Web Development Cookbook

By : Federico Kereki
Book Image

Modern JavaScript Web Development Cookbook

By: Federico Kereki

Overview of this book

JavaScript has evolved into a language that you can use on any platform. Modern JavaScript Web Development Cookbook is a perfect blend of solutions for traditional JavaScript development and modern areas that developers have lately been exploring with JavaScript. This comprehensive guide teaches you how to work with JavaScript on servers, browsers, mobile phones and desktops. You will start by exploring the new features of ES8. You will then move on to learning the use of ES8 on servers (with Node.js), with the objective of producing services and microservices and dealing with authentication and CORS. Once you get accustomed to ES8, you will learn to apply it to browsers using frameworks, such as React and Redux, which interact through Ajax with services. You will then understand the use of a modern framework to develop the UI. In addition to this, development for mobile devices with React Native will walk you through the benefits of creating native apps, both for Android and iOS. Finally, you’ll be able to apply your new-found knowledge of server-side and client-side tools to develop applications with Electron.
Table of Contents (15 chapters)

Doing async calls compactly

When Ajax started appearing, it was commonly used with callbacks, which themselves could have callbacks of their own, with more callbacks within, which eventually led to coining the term callback hell. As a way out of that impractical programming style, two other styles of working with services and asynchronous calls appeared: promises and async/await—though in truth, the latter also use promises!

Getting started

Let's see both styles by using a simple example. This book was written in three different cities: Pune, India; London, England; and Montevideo, Uruguay, so let's do some work related to those cities. We will write code that will get weather information for those cities...