Book Image

Getting Started with React

By : Doel Sengupta, Manu Singhal, Danillo Corvalan
Book Image

Getting Started with React

By: Doel Sengupta, Manu Singhal, Danillo Corvalan

Overview of this book

ReactJS, popularly known as the V (view) of the MVC architecture, was developed by the Facebook and Instagram developers. It follows a unidirectional data flow, virtual DOM, and DOM difference that are generously leveraged in order to increase the performance of the UI. Getting Started with React will help you implement the Reactive paradigm to build stateless and asynchronous apps with React. We will begin with an overview of ReactJS and its evolution over the years, followed by building a simple React component. We will then build the same react component with JSX syntax to demystify its usage. You will see how to configure the Facebook Graph API, get your likes list, and render it using React. Following this, we will break the UI into components and you’ll learn how to establish communication between them and respond to users input/events in order to have the UI reflect their state. You’ll also get to grips with the ES6 syntaxes. Moving ahead, we will delve into the FLUX and its architecture, which is used to build client-side web applications and complements React’s composable view components by utilizing a unidirectional data flow. Towards the end, you’ll find out how to make your components reusable, and test and deploy them into a production environment. Finally, we’ll briefly touch on other topics such as React on the server side, Redux and some advanced concepts.
Table of Contents (18 chapters)
Getting Started with React
About the Authors
About the Reviewers

AJAX in React

Like in any other applications, AJAX in a React-based application can be used to fetch data asynchronously. According to the Facebook documentation of loading the data from the server using AJAX (, you need to remember some of the key points as mentioned here:

  • Include the jQuery library in your HTML:

    <script src="//"></script>

    Because there is no separate Ajax-only library from jQuery that can be used, the entire jQuery has to be used in a React-based application, while using Ajax. Downloading the minified version of jQuery from cdn results in much less load time.

    Load the data in the life cycle phase of componentDidMount. This method occurs only once during the life cycle on the client, and any child components can be accessed in this phase. Any external js library or loading data using AJAX is advised to be done in this phase.

  • The isMounted method is used to check whether the...