React is a JavaScript library for building user interfaces. React introduces a more efficient and flexible way of structuring, arrange, and maintaining your UI code.
One of the main benefits of working with React is that is your application’s user interface by breaking it up into small reusable pieces of code called components.
For example, let’s say that you’re building a Film Review app using only HTML and JavaScript You’ll almost likely create the UI by combining elements like divs, spans, inputs, and others.
There are sections or pieces of the UI that you will likely reuse over and over again. For instance, there might be a star rating widget and a comments area for each Film review.
While those sections are composed of HTML elements like divs, headings, paragraphs, and images, each section can be thought of as a self-contained component.
React provide tools for us to create our own custom components, then quickly compose or combine them together to build complex interactive UIs.
This means we can design, build, even test a component once and then reuse it as needed in our application.
READ MORE : Why React Js is more powerful than Angular JS?
The other giant benefit is that React keeps your application’s data or at the state and the UI in-sync and can efficiently update your UI when data changes.
This is one of the most difficult parts of building interactive user interfaces. When building UIs with JavaScript, we often have some sort of data model. This is one of the most difficult parts of building interactive user interfaces. When building UIs with JavaScript, we often have some sort of data model.
For example, we might use arrays and objects to describe our data. In the Film review app, for instance, reviews might be represented as an array of objects, with each object being one film reviewed.
Imagine maintaining an application with hundreds or thousands of reviews, The programming or bookkeeping needed to manually keep visual elements like comments and ratings for all reviews in-sync with their JavaScript data model can quickly go out of control especially as you add more features.
React includes massive features that remove much of the complexity around building your UI and keeping it in-sync with your application data.
Allowing you to focus more on what your application should look like at any given moment, instead of how to change it over time.
You’re gonna learn more about components, applications state, organizing and managing your UI code, and other core features of React.
