Book Image

React and React Native

By : Adam Boduch
Book Image

React and React Native

By: Adam Boduch

Overview of this book

para 1: Dive into the world of React and create powerful applications with responsive and streamlined UIs! With React best practices for both Android and iOS, this book demonstrates React and React Native in action, helping you to create intuitive and engaging applications. Para 2: React and React Native allow you to build desktop, mobile and native applications for all major platforms. Combined with Flux and Relay, you?ll be able to create powerful and feature-complete applications from just one code base. Para 3: Discover how to build desktop and mobile applications using Facebook?s innovative UI libraries. You?ll also learn how to craft composable UIs using React, and then apply these concepts to building Native UIs using React Native. Finally, find out how you can create React applications which run on all major platforms, and leverage Relay for feature-complete and data-driven applications. Para 4: What?s Inside ? Craft composable UIs using React & build Native UIs using React Native ? Create React applications for major platforms ? Access APIs ? Leverage Relay for data-driven web & native mobile applications
Table of Contents (34 chapters)
React and React Native
About the Author
About the Reviewer
Customer Feedback

Why components need a lifecycle

React components go through a lifecycle, whether our code knows about it or not. In fact, the render() method that you've implemented in your components so far in this book, is actually a lifecycle method. Rendering is just one lifecycle event in a React component.

For example, there's lifecycle events for when the component is about to be mounted into the DOM, for after the component has been mounted to the DOM, when the component is updated, and so on. Lifecycle events are yet another moving part, so you'll want to keep them to a minimum. As you'll learn in this chapter, some components do need to respond to lifecycle events to perform initialization, render heuristics, or clean up after the component when it's unmounted from the DOM.

The following diagram gives you an idea of how a component flows through its lifecycle, calling the corresponding methods in turn:

These are the two main lifecycle flows of a React component. The first happens when the component...