Book Image

React Components

By : Christopher Pitt
Book Image

React Components

By: Christopher Pitt

Overview of this book

The reader will learn how to use React and its component-based architecture in order to develop modern user interfaces. A new holistic way of thinking about UI development will establish throughout this book and the reader will discover the power of React components with many examples. After reading the book and following the example application, the reader has built a small to a mid-size application with React using a component based UI architecture. The book will take the reader through a journey to discover the benefits of component-based user interfaces over the classical MVC architecture. Throughout the book, the reader will develop a wide range of components and then bring them together to build a component-based UI. By the end of this book, readers would have learned several techniques to build powerful components and how the component-based development is beneficial over regular web development.
Table of Contents (17 chapters)
React Components
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Dependency injection and service location


Dependency injection and service location are interesting concepts that are not limited to React development. To really understand them, let's move away from components for a while. For a moment, imagine that we wanted to create a sitemap. To do this, we could perhaps use code resembling the following code:

let backend = {
    getAll() {
        // ...return pages
    }
};
class SitemapFormatter {
    format(items) {
        // ...generate xml from items
    }
}
function createSitemap() {
    const pages = backend.getAll();
    const formatter = new SitemapFormatter();
  
    return formatter.format(
        pages.filter(page => page.isPublic)
    );
}

let sitemap = createSitemap();

In this example, createSitemap has two dependencies. Firstly, we fetch pages from backend. This is a kind of global storage object. We used something similar to this when we looked at the Flux architecture.

The second dependency is to the SitemapFormatter implementation...