What is ReactJS and what are its advantages?

Photo by Blake Connally on Unsplash

ReactJS is the most popular JavaScript library for building modern single-page applications. There are over 150,000 stars in the git hub and at least 8 million downloads in “npm”. It is also widely used in building mobile applications using “React Native”. The library was created by Facebook, and it’s been used on a vast number of websites (over 1 million) since March 2013.

  • Facebook — the creators of the Quick Rendering provided by the library, provide the opportunity for over 2 billion users globally to use the platform even if their internet connection is not so strong.
  • Instagram — the platform uses even more ReactJS functionality than Facebook. As a link to the Google Maps API, Geolocation, and Search Engine Accuracy.
  • Tesla — Elon Musk’s team uses the library for their advanced web technologies.
  • Netflix — this is one of the most popular platforms for providing media content such as movies, TV series, animations, etc. Everything is ready for streaming with an extremely good video speed and a good-looking user interface. All that built with React.
  • Atlassian — the company that has helped organize many teams. They have created tools like “Jira” and “Trello”. Most of their applications are based on React.
  • Other examples are Dropbox, Mattermark, Airbnb, Reddit, BBC and many more

The advantages of React are not small at all.

The library continues to gain popularity and develop as we speak — or you read, I write. The biggest advantage of React is that it encourages programmers to divide the functionality into small reusable components that are easy to manage. Also, React imposes the latest JavaScript standards (ES6 +), which makes building an application more enjoyable. The library is easy to enter and has some of the best documentation to follow to acquire the necessary skills. It is also quite flexible.

The basis of ReactJS is a component library, from there the developers choose what packages to use for routing, form validation, sending HTTP requests, state management (Redux, Flux, MobX), and others. One of the main advantages of React, compared to other platforms such as Angular, is the so-called virtual DOM tree (or Virtual DOM). A concept that allows the built UI to be stored in memory and synchronized with the real DOM tree. This is a huge plus when optimizing an application.

The most basic skill, without which it will be extremely difficult to enter the philosophy of React, is JavaScript. The syntax of the language needs to be mastered, along with multiple topics such as functions, arrays, objects, working with DOM, higher-order functions, “currying”, ES6 + knowledge (classes, rest, spread, import/export).

Separately, you need to know what is REST and RESTful service, how HTTP works and what are the premiums, as well as AJAX requests. It is considered a bonus if you have good HTML & CSS knowledge

A non-ordinary woman, working as a Software Developer with a flair for adventures…