React.js is great for building large applications with data that changes over time.
In React.js, common UI design elements (buttons, form fields, background etc.) are divided up into small reusable components with well-defined interfaces. So when you work on the front-end for your app, you can recycle the components you already have and write much less code. This means faster development time and fewer bugs, because problems are easier to isolate and fix.
React.js is meant for building fast application that handle large amounts of data. It automatically updates and renders just the right components when your data changes which makes writing complex UI quicker and easier.
React.js is simple and functional. It lets you build UI faster because your code is more readable and maintainable thanks to the small components model. And with the help of automatic updates, you can scale painlessly.
React.js was first developed at Facebook for internal purposes, but after a while they decided it’s so great they need to share it with the world. And the world loved it. Instagram’s entire website was built on React.js after the two companies joined forces and many other successful projects are also using React.js including Khan Academy, New York Times, Squarespace, Netflix, Airbnb and Imgur.