Tips & Best Practices for Working With the React.js Library

By Yoshitaka Shiotsu

markusspiske / Pixabay

React.js (also known as ReactJS or React) is an open-source, isomorphic JavaScript library for building user interfaces. Developed by Facebook, React.js takes a component-based approach to front-end web development, using server-side rendering and the Virtual DOM to provide a performance-oriented solution for designing encapsulated, reusable UI components.

Whether you’re diving into React.js for the first time or simply looking for a better way to manage your React.js projects, here are some tips and best practices to keep in mind as you bring your next project to life.

1. Learn the Flux Design Pattern

If you’re new to React.js, one of the first things you’ll often be told is that React is simply the “V” in MVC (Model View Controller)—anyone used to the last generation of JavaScript frameworks (like AngularJS) will usually have no trouble diving in once they understand the library’s primary role. That said, the MVC design pattern can start to get a little restrictive as you start to scale up your app—Facebook realized this and created a new application architecture called Flux to solve some of these issues. Flux is better suited to React because it places an emphasis on unidirectional data flow. Here are the three parts of Flux:

  • Stores are similar to the models in MVC, except they manage the application state for a particular domain within the application.
  • The Dispatcher is a simple single registry of callbacks to the stores within the application. It also manages the dependencies between stores.
  • Views are the same as the view in MVC, except in the context of React and Flux, also include Controller-Views, which listen for change events and retrieve application state from stores as required.

Basically, all data in the application flows through the dispatcher, which acts as a central hub. This data is tracked as Actions, which are provided to the dispatcher in an action creator method, often as a result of a user interacting with the view. The dispatcher invokes the registered callback, effectively dispatching the action to all stores that have registered with that callback. The stores in turn relay that change event to the controller-views to alert them of the change. The controller-views listen for events, retrieve data from the appropriate stores as required and re-render themselves and all their children in the component tree accordingly.

2. Get Used to Immutable States

Immutable objects cannot be modified once created, and when it comes to a library that owes its performance to server-side rendering, that inherent thread safety can lead to less headaches and better performance overall. Now you could choose to achieve immutability in JavaScript the old fashioned way by writing extremely careful code, or you could simply use Facebook’s Immutable.js library and gain access to persistent immutable data structures that can be used in your application as required for improved rendering performance.

3. Use Functional Components as Much as Possible

In React.js, a functional component is simply a component that has no state or methods—in other words, a simple JavaScript function. Instead of extending the React.Component Go to the full article.

Source:: Business 2 Community

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