The main advantages of React
Virtual DOM and better performance
Jаvascript websites use a hierarchy of Document Object Model (DOM) objects. They look like digital trees, where each leaf is a particular node or object representing part of a web document. As soon as a user requests an update to a web page, the browser updates the entire DOM structure. This takes too much time. While users expect website elements to load immediately, a long wait can drive them away forever.
React.js fixes this problem. It uses a virtual DOM, which is a lightweight, improved version of the DOM. With it, the browser updates only the nodes that need to change. The virtual DOM can significantly reduce loading time: a boost in performance and user satisfaction.
So,
Server-side rendering and SEO
Your website is pointless without visitors and readers. To make it accessible and visible to your potential target audience, you need to make sure search engines display it correctly.
Unlike client-side-rendered websites, React JS websites are known for their server-side rendering feature. This makes an app much faster and much better for search engine rankings compared with client-side-rendered products.
Reusable UI components and development speed
A React website or app consists of several separate modules. The entire codebase is split into pieces, or modules. Each module has a specific purpose and interacts with the other modules. This makes a significant contribution to the development and debugging process:
To create a new version of a website, developers don't have to rewrite the entire product. They simply reuse whatever they can and integrate a new module describing the updated functionality.
Debugging gets easier: once a defect is found, the developer makes small changes to the affected modules without rewriting the whole app.
Community and ecosystem
The number of tools and extensions available to React developers is enormous. Along with impressive out-of-the-box functionality, you'll have more options once you discover just how vast the React galaxy is. No wonder so many websites are built with React. Its “learn once, write anywhere” philosophy, backed by a multitude of ready-made tools to improve the development process, is invaluable. The company behind React.js can also help you broaden your horizons and take advantage of developing hybrid apps with React Native.
But wait, we haven't talked about the people who devote their efforts to React. As you already know, it was originally a Facebook product. But once the React library demonstrated its advantages, more and more software engineers followed Facebook's example and became React contributors (there are now almost 1500 specialists on Github). Meanwhile, on LinkedIn you can find more than 1 000 000 developers with in-depth knowledge of React.
In 2019, React ranked 2 among the most loved web frameworks.
