After Angular, its team kept developing its newer versions. From Angular 1 it now has reached to Angular 6 where we even have beta version of Angular 6 available. There’s no big change between them only that each new version comes with some new and better update than the previous one.
Including optimized build and faster compile time, it comes with a complete rewrite. with every new version, it continuously worked on every framework by adding new features, bug fixing, better optimization and many more.
Angular 5 is mainly focused to make Angular faster. It allows AngularJS applications to smoothly migrate to Angular and vice versa. With this form, loading time to execution as well as optimization, everything gets improved.
React JS an open-source library is mainly used for building single page user interface applications. With the help of React JS, we can instantly refer the older posts without consuming much time. It allows developers to create large web applications which can change the data without even reloading the page.
React JS is maintained by Facebook and such individual community of developers and companies. It is mainly developed to make the UI state more feasible and easy to handle. Introduction of React JS made the programming ecosystem better with active community resulting in high performance.
The bigger advantage of using React JS to developers is that it already has predefined and pre-written components available. It helps them save lots of time of developers as using this they have very less code to write.
Angular 5 and React JS both are equally problem solving and important at their use. Although their working approaches are different, both are equally good and efficient while handling the queries. React JS however is more flexible, scalable and easy to learn as compared to Angular 5. While Angular on the other way is more efficient in organizing the workflow. Thus both are equally important and useful at their own place.