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


React uses SyntheticEvent, which is a cross-browser wrapper around the browser's native event. So all the event handlers in the react applications will be passed instances of SyntheticEvent. React's event ecosystem has the same interface as any of the browser's native events with the advantage that it works identically in all the browsers and provides stopPropagation() and preventDefault() too.

If React is installed as an NPM module, then these SyntheticEvent-related files can be found in the following location within your app: app/node_modules/react/lib.

All these events comply with the W3C standard. The main event flow happens as:

  • Dispatching the event : @param {object} dispatchConfig

  • Marker identifying the event target: @param {object} dispatchMarker

  • Native event: @param {object} nativeEvent

The way React uses this event delegation is by listening to the nodes that have listeners. Depending on the event handlers on the particular node, the synthetic event system of React implements its...