What does ReactJs offer that Polymer doesn't? - reactjs

I know how to use Polymer fairly well, and am embarking on a django project employing Polymer for webcomponents. I want to get on the bandwagon of "popular web application frameworks" like Angular and React, which are said to be distinct from Polymer's main purpose. But so far it seems as if all React does is create custom components itself. So on top of creating individual components, what does React offer that Polymer doesn't?

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What is the difference between React, ReactJS, and React Native? [duplicate]

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What is the difference between React Native and React?
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Closed 1 year ago.
I want to study a course about React, but I don't know couple of things, like:
What is the difference between React, ReactJS, and React Native ?
Well, if there is a big difference, What is the best one of them to study ?
I am really looking forward to study it, so if you got any information on the best way to start learning this course, I would appreciate it.
Thank you so much.
React and React.Js is one and the same.
React / ReactJs
ReactJS is an open-source JavaScript library used to build the user interface for Web Applications. It is responsible only for the view layer of the application. It provides developers to compose complex UIs from a small and isolated piece of code called "components." ReactJS made of two parts first is components, that are the pieces that contain HTML code and what you want to see in the user interface, and the second one is HTML document where all your components will be rendered.
React Native
React Native is an open-source JavaScript framework used for developing a mobile application for iOS Android, and Windows. It uses only JavaScript to build a cross-platform mobile app. React Native is same as React, but it uses native components instead of using web components as building blocks. It targets mobile platforms rather than the browser.
Link for Further information
What is the best one of them to study ?
React and React native both solves different kind of problem. React is common library between react and react-native which provides supports for hooks and generate virtual dom.
react-dom will render content on web using virtual dom created by react.
However on other side react-native will create bundle for android and iOS.
Main differences between Reactjs and React Native
When it comes to a web platform, Reactjs can be defined as a base
derivative of React DOM, while React Native acts as a base
derivative by keeping workflow and syntax the same alongside
altering components.
React is a JavaScript library that can help your developers in
building a highly responsive UI Layer and React Native on the other
hand is a complete framework to develop cross-platform applications.
Virtual DOM is used to extract browser code in React; native APIs
help in rendering components in mobile in React Native.
In React Native, UI is rendered with the help of JSX but the
applications curated with Reactjs extract HTML in UI.
For styling in Reactjs, CSS is used, and React Native platform
requires a stylesheet for styling.
Using CSS, you can carry out animation in Reactjs; for animation in
React Native, you need to use an animated API.

How can i use my react component as a web component with just a javascript tag call

I am working on a react app with mapbox that gets data from a JSON file and adds the data on the app.. I have successfully built the app. But what I want now is that I want to be able to use my react-app as a web component. In a way that it will be usable in websites and web apps.
Think of it this way:
Your React application is the U-Haul truck that delivers everything from the Web Server (Back-End) to the Browser (Front-End)
Now you say you want everything wrapped in a (native) Web Component:
<move-house></move-house>
It is do-able, but you as the Developer have to develop all dependencies
It starts by fully understanding what React is and does, so you can wrap all its behaviour.
Unlike other Frameworks (Angular, Vue, Svelte) React has no "Make-it-a-Web-Component" option,
because React, with its virtual DOM, is a totally different (and rather outdated) beast that doesn't comply with modern Web Standards. (today [Dec2020] React only scores 71% on the Custom Elements Everywhere test)
See: https://custom-elements-everywhere.com/libraries/react/results/results.html
for what you as the developer have to fix, because React does not do that for you
Some say React compared to modern JavaScript technologies, Frameworks, Web Component libraries like Lit and Stencil or Svelte, is more like:
It is possible in react using direflow. https://direflow.io/

What is the difference between angular component and React component?

Can someone explain that how the concept of components is different in Angular 8 and React? According to various tutorials I've watched, it says React components are reusable and can be rendered separately but it happens same in Angular as well. In file directory you have a main app component inside which you can create separate sidenav, header , footer components and use it whenever you like. It's isolated. So where's the difference? I've worked on Angular 8 previously and but new to React.
Angular and React are two differente technologies. Angular, a framework, with lots of built-in tools, and React a library (in my humble opinion, i would like to believe that you can call React a framework too) that has a popular rendering structure.
Angular and React components has the same concept, but obviously different implementations.
But for sure you can assume that components are made mainly for Code Reuse and Maintenance.

Using react-native components for react web

How can we use share components between react-native and react web projects. I have read react native can be derived from react. How is it possible to use same js code between two projects (fully or partially) ?
Take a look at the react-native-web library. It's pretty good:
https://github.com/necolas/react-native-web
As long as you only use react native components, e.g. View instead of div, and Text instead of p etc, you'll be able to share view components between your app and website. Then you can pass down all the data from API calls etc as props from within the individual mobile app/website code.
In my projects I have a common folder that contains all these shared view components, and only put the platform specific code inside mobile or web-app. It works pretty well that way.

Is Redux the same for React and React native?

I am currently studying RN by myself, without prior knowledge in React. A lot of things seem to exist in both such as Redux and hooks. Many of the resources I find refer to React in the title (e.g "Redux Crash Course With React").
My question is: where does the line cross between React and React Native? Would I be fine studyig form these resources that refer to React, or would that just confuse me?
I'm trying to understand a go to approach to understand which resource I'd be fine with and which would be irrelevant.
React Native contains React library to use it as front-end library.
Most of usages of React are the same for React-Native. And it is same for Redux too.
React-Native must have other libraries to build applications that can run on both of Android and iOS.
Also it has middleware libraries that allow us to use most of native libraries' functionalities. As an example you can check Alert directory out. It is used for to show native Android alert dialogs.
Good luck..
Both react and react native use javascript to create the user interface we need but the difference is in the rendering, style and bundling and you should know that react native is a framework itself but react.js is a library. the main difference:
---React-Native doesn’t use HTML to render the app, but provides alternative components that work in a similar way. Those React-Native components map the actual real native iOS or Android UI components that get rendered on the app.
---With React-Native, you’ll have to learn a completely new way to animate the different components of your app with Javascript.
--- navigating between pages are totally different!!!
so we conclude that it's better to study references based on RN not react.js . but some functionalities such as redux or hooks or a lot of it's components are exactly the same and you can study react.js references for them. only the 3 differents that i said above are important.

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