![]() ![]() It is designed specifically for building user interfaces and therefore does not include many of the tools some developers might consider necessary to build an application. ![]() If you are running iOS 14.2, 14.3: UTM works with sideloading (non-jailbroken) if your device has an Apple A12 chip or newer. React does not attempt to provide a complete application library. The last version of UTM that supports iOS 11-13 is v3.2.4. Import React from "react" /** A pure component that displays a message with the current count */ const CountDisplay = props => ) Common idioms The two primary ways of declaring components in React are through function components and class components. Values internal to a component are called its state. When rendering a component, values are passed between components through props (short for "properties"). The components are rendered to a root element in the DOM using the React DOM library. : 70 React applications typically consist of many layers of components. ![]() : 10–12 These components are modular and reusable. React code is made of entities called components. This is in contrast with imperative programming. : 76 Developers design views for each state of an application, and React updates and renders components when data changes. React adheres to the declarative programming paradigm. Hello, world! Notable features Declarative React App You need to enable JavaScript to run this app. ![]()
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