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The library for web and native user interfaces React lets you build user interfaces out of individual pieces called components. Create your own React components like Thumbnail, LikeButton, and Video. Then combine them into entire screens, pages, and apps. Whether you work on your own or with thousands of other developers, using React feels the same. It is designed to let you seamlessly combine components written by independent people, teams, and organizations.

React components are JavaScript functions. Want to show some content conditionally? Use an if statement. Displaying a list? Try array map(). Learning React is learning programming.

This markup syntax is called JSX. It is a JavaScript syntax extension popularized by React. Putting JSX markup close to related rendering logic makes React components easy to create, maintain, and delete. This section provides detailed reference documentation for working with React. For an introduction to React, please visit the Learn section. The React reference documentation is broken down into functional subsections:

React DOM contains features that are only supported for web applications (which run in the browser DOM environment). This section is broken into the following: The React Compiler is a build-time optimization tool that automatically memoizes your React components and values: The ESLint plugin for React Hooks helps enforce the Rules of React: This page is an overview of the React documentation and related resources. React is a JavaScript library for building user interfaces.

Learn what React is all about on our homepage or in the tutorial. React has been designed from the start for gradual adoption, and you can use as little or as much React as you need. Whether you want to get a taste of React, add some interactivity to a simple HTML page, or start a complex React-powered app, the links in this section will help you get started. If you’re interested in playing around with React, you can use an online code playground. Try a Hello World template on CodePen or CodeSandbox. If you prefer to use your own text editor, you can also download this HTML file, edit it, and open it from the local filesystem in your browser.

It does a slow runtime code transformation, so we’d only recommend using this for simple demos. In addition to Hooks and Components, the react package exports a few other APIs that are useful for defining components. This page lists all the remaining modern React APIs. Resources can be accessed by a component without having them as part of their state. For example, a component can read a message from a Promise or read styling information from a context. To read a value from a resource, use this API:

After a year since the release of v3, we have addressed the most requested and questioned areas by the community. refine v4 features better developer experience, and new functionalities to simplify the work of developers. In refine v4, our goal was to make refine available and accessible on every platform where you can use React and make it easy to use in both new and existing projects. This meant making refine more flexible and a better fit for a wider range of use cases. To achieve this, we needed a more robust, easy-to-integrate and consistent API throughout the project that would boost the DX without limiting our users' options. Our goal was to make things easier for developers by providing abstractions and techniques to manage some concerns like data, routing, authorization, layouts, etc.

without limiting the power of other tools and libraries they want to use. These changes were made to our API to allow you to use refine in every use case and easily adopt it for your existing projects. The @refinedev/codemod package handles the breaking changes for your project and automatically migrates it from 3.x.x to 4.x.x. Simply cd into the root folder of your project (where the package.json is located) and run this command:

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