The React library is open source, which means anyone can download its source code, make modifications, and distribute those changes. It is also used for the development of SPA page — Single Page Application, both for the web and for mobile applications. It is worth mentioning that React Native is used to create mobile applications for Android and iOS.
It is easy to learn
Allows reuse of components
When developing a page using React all its components can be reused. Imagine a page divided into top menu, sidebars and central content, in which each of these groups represents a component. Inside them, there are other components, such as links, buttons, text box, etc. When developing a component for the top menu, such as a search bar, it can be reused elsewhere on the page, such as the sidebar, without having to rewrite the code.
Has fast rendering with Virtual DOM
Many applications require a large number of interactions with the user, such as filling out forms. Direct manipulation of the DOM decreases performance, as it is more laborious and complex since it is necessary to search the elements to change their state. When using the virtual DOM, React gains more agility and there is better page performance, as the manipulation is done in memory and the update is optimized by the resources offered by the library.
It is SEO friendly
React is a library that is also used for the development of SPA platforms. One of the difficulties encountered in this model is providing URLs to search engines since requests are made dynamically, which makes proper tracking difficult. React offers a component called React Router, which is capable of generating the routes used by the application. In this way, you can create the user-friendly URL structure needed for indexing by search engines.
Besides React Router, also other libraries aim to improve the SEO of pages built with React. One of them is React Helmet where you can transform code into more search engine friendly code. Know more about how React.js can significantly enhance your website SEO performance here https://uigstudio.com/services/react-js-development.
Features easy implementation
React is easy to use and can be implemented little by little in an application. This means that you do not have to migrate all pages at once. Instead, you can implement just one page at a time and make a gradual change. This feature is important to avoid the need to rewrite the entire interface with the user, which helps to avoid major impacts that a change in the front-end can cause.