ReactJS is a declarative, effective javascript framework to built an interactive user interface with great ease and flexibility. It provides many advantages in designing simple views for different states in an application and greater ease in updating and rendering the right components efficiently just when the data changes.
React was developed by Facebook and initially released in 2013. The current stable version is 16.X, released in November 2018 (with smaller incremental updates since then). React is used by large companies like Facebook, Twitter, Whatsapp, Instagram, Microsoft, Slack, Asana, Airbnb, and more.
