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)

Defining components

The key idea behind working with React is that everything and I mean, everything is a component. Your whole web application will be a component, itself made of other components, which will themselves have smaller components, and so on. Components generate HTML, which is shown onscreen. The data for the HTML comes from externally assigned props (properties) and internally maintained state. Whenever there is a change in props or state, React takes care of refreshing the HTML so that the view (what the user sees) is always up to date.

Let's look at an example. Imagine that you want to create a screen that will let the user query data about regions of the world. How could you go about designing it? Check out the following screenshot for details:

Whenever the user selects a country, we'll show several cards with information about its...