React allows developers to create large web-applications that use data and can change over time without reloading the page. It aims primarily to provide speed, simplicity, and scalability.
ReactJS was meant as an open-source library for JavaScript and released by Facebook. However, unlike lots of other Facebook products, this one is truly open-source and free. Because of this, contributors are constantly working to improve it.
Virtual DOM helps ReactJS developers work faster and makes UX and UI smoother. Other frameworks work with the Real DOM, while ReactJS uses its abstract copy – the Virtual DOM. It’s like a virtual browser instead of the real one. Which also allows developers to use hot reloading, which means changes get applied in a real-time.
ReactJS lets developers forget about usual upgrading headache by allowing reuse of existing components. Since all components are isolated, any kind of change in one component doesn’t affect others. This brilliant function allows developers to reuse components which don’t produce any changes in and of themselves.
ReactJS is all about stability and simplifies data binding with such flow. As child elements cannot affect parent data, to change an object developer has to modify its state and apply updates. Which means only allowed components will be upgraded.