React Js

React.js is an open-source JavaScript library for creating user interfaces that aims to address challenges encountered in developing single-page applications. It is maintained by Facebook, Instagram and a community of individual developers and corporations.

React is intended to help developers build large applications that use data that changes over time. Its goal is to be simple, declarative and compose-able. React only handles the user interface in an app; it is considered to only be the view in the model–view–controller (MVC) software pattern, and can be used in conjunction with other JavaScript libraries or larger MVC frameworks such as AngularJS. It can also be used with React-based add-ons that take care of the non-UI parts of building a web application.

By the words of Edsge Dijkstra "Our intellectual powers are rather geared to master static relations and that our powers to visualize processes evolving in time are relatively poorly developed. For that reason we should do (as wise programmers aware of our limitations) our utmost to shorten the conceptual gap between the static program and the dynamic process, to make the correspondence between the program (spread out in text space) and the process (spread out in time) as trivial as possible." React fully epitomizes the desire to shorten the conceptual gap between the static program and the process of executing it by its declarative nature.

React is available on GitHub.

Additional resources

Big Companies adopting React

This has been an exciting summer as four big companies: Yahoo, Mozilla, Airbnb and Reddit announced that they were using React! .... We're building an ambitious new web app, where the UI complexity represents most of the app's complexity overall. It includes a tremendous amount of UI widgets as well as a lot rules on what-to-show-when. This is exactly the sort of situation React.js was built to simplify.


6 Reasons Why We Love React.js

Components are the future of web development. React.js is extremely efficient. It’s awesome for SEO. It makes writing Javascript easier. It gives you out-of-the-box developer tools. The brains behind Facebook are maintaining this project.


React vs AngularJS vs KnockoutJS: a Performance Comparison

If performance is your primary motivation, React is a good choice for a framework, especially if you’re showing large amounts of data. I understand that this example is relatively contrived, as nobody in their right mind is going to be showing 1000 items all at once, but I feel it’s indicative as to which framework performs better as a whole.


React vs AngularJS – How the two Compare

While the differences between Angular JS and React JS are large, they can both accomplish the same thing. If I appear biased in what I’ve written here, it’s because I’m biased, definitely toward React. Angular is a much fuller featured framework than React, which isn’t really a framework at all, but that doesn’t mean a lot when I don’t see the need for most of the features that Angular provides. I’ve found that I have to write less code to do more in React, and React has better performance than Angular due to React’s implementation of a virtual DOM (which I’ll prove in a future post).


Why is switching to React instead of AngularJS?

React.js = Unopinionated, simple and highly optimised.