This is really different,
React is view library;
and Rxjs is reactive programming library for javascript.
You can use Rxjs inside react view but in reactjs, people usually use a library like Redux, flux, mobx or relayjs (if they use graphql) for data flow.
ReactJs is a view library UI. ReactiveX or rxjs is a concept, methods or patterns for asychronous programming.
ReactJS In the simple and popular term, React is the V (View) in MVC (Model/View/Controller).
React is a JavaScript library (from Facebook) that is used to render views (for example, HTML pages) dynamically based on some state, which is often in the form of data. React then updates the generated views whenever the original state changes. React is a small but powerful library, with the power being more in the concepts than in the implementation.
React is a javascript library for building user interfaces whereas RxJS is a javascript library for reactive programming using Observables.
https://stackoverflow.com/questions/41670972/what-is-the-difference-between-reactjs-and-rxjs
------------------越是喧嚣的世界,越需要宁静的思考------------------
合抱之木,生于毫末;九层之台,起于垒土;千里之行,始于足下。
积土成山,风雨兴焉;积水成渊,蛟龙生焉;积善成德,而神明自得,圣心备焉。故不积跬步,无以至千里;不积小流,无以成江海。骐骥一跃,不能十步;驽马十驾,功在不舍。锲而舍之,朽木不折;锲而不舍,金石可镂。蚓无爪牙之利,筋骨之强,上食埃土,下饮黄泉,用心一也。蟹六跪而二螯,非蛇鳝之穴无可寄托者,用心躁也。