React - это библиотека JavaScript для создания пользовательских интерфейсов. Он использует декларативную компонентную парадигму и стремится быть одновременно эффективным и гибким.

React- это javascriptдля создания пользовательских интерфейсов.

Он использует декларативную парадигму, которая упрощает анализ приложения, нацеливая его на эффективность и гибкость. Первоначально разработанная внутри Facebook, React с тех пор стала открытым исходным кодом, где она продолжает развиваться и поддерживаться Facebook и сообществом открытого исходного кода.


Просто пользовательский интерфейс

Многие люди используют React как V в MVC. React не делает никаких предположений относительно остальной части вашего технологического стека, и его легко опробовать на небольшой функции в существующем проекте.


Виртуальный DOM

React использует виртуальную реализацию DOM diff для сверхвысокой производительности. Он также может отображаться на сервере с помощью node.js- тяжелый DOM браузера не требуется. Кроме того, существует ответвление React-Native для использования React на мобильных устройствах, таких как iosи android. ,


Поток данных

React реализует односторонний реактивный поток данных с использованием подпорок, которые сокращают шаблон и проще для понимания, чем традиционная двусторонняя привязка данных.


Пример использования JSX

class HelloWorldWidget extends React.Component {
    render() {
        return (
            <div>
                Hello World!
            </div>
        );
    }
};

ReactDOM.render(
    <HelloWorldWidget />,
    document.body
);

Пример использования функционального компонента

const HelloWorldWidget = () => {
    return (
        <div>
            Hello World!
        </div>
    );
};

ReactDOM.render(
    <HelloWorldWidget />,
    document.body
);

Начиная

 npx create-react-app my_app

Преимущества

  • React создает виртуальный DOM, чтобы все компоненты можно было визуализировать по отдельности без необходимости перерисовки всей страницы браузером

  • Пользователь может обновить определенное содержимое страницы, просто перерисовав только этот компонент

  • Логика представления React означает, что он может легко отображаться на сервере, в браузере или собственных компонентах.

  • React можно использовать в сочетании с такими структурами, как angular.jsи backbone.js

  • Разделение декларативного представления (jsx) и логики облегчает чтение и обслуживание проектов.


Ресурсы:


Книги:


Связанные теги:


Официальный логотип:


Версии:

|---------|----------------|---------------------
| Version |  Release Date  | Changes
|---------|----------------|---------------------
|  0.3.0  |29 May 2013     |Initial Public Release
|---------|----------------|---------------------
|  0.4.0  |20 July 2013    |Support for comment nodes <div>{/* */}</div>, Improved server-side rendering APIs, Removed React.autoBind, Support for the key prop, Improvements to forms, Fixed bugs.
|---------|----------------|---------------------
|  0.5.0  |20 October 2013 |Improve Memory usage, Support for Selection and Composition events, Support for getInitialState and getDefaultProps in mixins, Added React.version and React.isValidClass, Improved compatibility for Windows.
|---------|----------------|---------------------
|  0.8.0  |20 December 2013|Added support for rows & cols, defer & async, loop for <audio> & <video>, autoCorrect attributes. Added onContextMenu events, Upgraded jstransform and esprima-fb tools, Upgraded browserify.
|---------|----------------|---------------------
|  0.9.0  |20 February 2014|Added support for crossOrigin, download and hrefLang, mediaGroup and muted, sandbox, seamless, and srcDoc, scope attributes, Added any, arrayOf, component, oneOfType, renderable, shape to React.PropTypes, Added support for onMouseOver and onMouseOut event, Added support for onLoad and onError on <img> elements.
|---------|----------------|---------------------
|  0.10.0 |21 March 2014   |Added support for srcSet and textAnchor attributes, add update function for immutable data, Ensure all void elements don't insert a closing tag.
|---------|----------------|---------------------
|  0.11.0 |17 July 2014    |Improved SVG support, Normalized e.view event, Update $apply command, Added support for namespaces, Added new transformWithDetails API, includes pre-built packages under dist/, MyComponent() now returns a descriptor, not an instance.
|---------|----------------|---------------------
|  0.12.0 |21 November 2014|Added new features Spread operator ({...}) introduced to deprecate this.transferPropsTo, Added support for acceptCharset, classID, manifest HTML attributes, React.addons.batchedUpdates added to API, @jsx React.DOM no longer required, Fixed issues with CSS Transitions.
|---------|----------------|---------------------
|  0.13.0 |10 March 2015   |Deprecated patterns that warned in 0.12 no longer work, ref resolution order has changed, Removed properties this._pendingState and this._rootNodeID, Support ES6 classes, Added API React.findDOMNode(component), Support for iterators and immutable-js sequences, Added new features React.addons.createFragment, deprecated React.addons.classSet.
|---------|----------------|---------------------
|  0.14.1 |29 October 2015 |Added support for srcLang, default, kind attributes, and color attribute, Ensured legacy .props access on DOM nodes, Fixed scryRenderedDOMComponentsWithClass, Added react-dom.js.
|---------|----------------|---------------------
|  15.0.0 |07 April 2016   |Initial render now uses document.createElement instead of generating HTML, No more extra <span>s, Improved SVG support, ReactPerf.getLastMeasurements() is opaque, New deprecations introduced with a warning, Fixed multiple small memory leaks, React DOM now supports the cite and profile HTML attributes and cssFloat, gridRow and gridColumn CSS properties.
|---------|----------------|---------------------
|  15.1.0 |20 May 2016     |Fix a batching bug, Ensure use of the latest object-assign, Fix regression, Remove use of merge utility, Renamed some modules.
|---------|----------------|---------------------
|  15.2.0 |01 July 2016    |Include component stack information, Stop validating props at mount time, Add React.PropTypes.symbol, Add onLoad handling to <link> and onError handling to <source> element, Add isRunning() API, Fix performance regression.
|---------|----------------|---------------------
|  15.3.0 |30 July 2016    |Add React.PureComponent, Fix issue with nested server rendering, Add xmlns, xmlnsXlink to support SVG attributes and referrerPolicy to HTML attributes, updates React Perf Add-on, Fixed issue with ref.
|---------|----------------|---------------------
|  15.3.1 |19 August 2016  |Improve performance of development builds, Cleanup internal hooks, Upgrade fbjs, Improve startup time of React, Fix memory leak in server rendering, fix React Test Renderer, Change trackedTouchCount invariant into a console.error.
|---------|----------------|---------------------
|  15.4.0 |16 November 2016|React package and browser build no longer includes React DOM, Improved development performance, Fixed occasional test failures, update batchedUpdates API, React Perf, and ReactTestRenderer.create().
|---------|----------------|---------------------
|  15.4.1 |23 November 2016|Restructure variable assignment, Fixed event handling, Fixed compatibility of browser build with AMD environments.
|---------|----------------|---------------------
|  15.4.2 |06 January 2017 |Fixed build issues, Added missing package dependencies, Improved error messages.
|---------|----------------|---------------------
|  15.5.0 |07 April 2017   |Added react-dom/test-utils, Removed peerDependencies, Fixed issue with Closure Compiler, Added a deprecation warning for React.createClass and React.PropTypes, Fixed Chrome bug.
|---------|----------------|---------------------
|  15.5.4 |11 April 2017   |Fix compatibility with Enzyme by exposing batchedUpdates on shallow renderer, Update version of prop-types, Fix react-addons-create-fragment package to include loose-envify transform.
|---------|----------------|---------------------
|  15.6.0 |13 June 2017    |Add support for CSS variables in style attribute and Grid style properties, Fix AMD support for addons depending on react, Remove unnecessary dependency, Add a deprecation warning for React.createClass and React.DOM factory helpers.
|---------|----------------|---------------------
|  16.0.0 |26 September2017|Improved error handling with introduction of "error boundaries", React DOM allows passing non-standard attributes, Minor changes to setState behavior, remove react-with-addons.js build, Add React.createClass as create-react-class, React.PropTypes as prop-types, React.DOM as react-dom-factories, changes to the behavior of scheduling and lifecycle methods.
|---------|----------------|---------------------
|  16.1.0 |9 November 2017 |Discontinuing Bower Releases, Fix an accidental extra global variable in the UMD builds, Fix onMouseEnter and onMouseLeave firing, Fix <textarea> placeholder, Remove unused code, Add a missing package.json dependency, Add support for React DevTools.
|---------|----------------|---------------------
|  16.3.0 |29 March 2018   |Add a new officially supported context API, Add new packagePrevent an infinite loop when attempting to render portals with SSR, Fix an issue with this.state, Fix an IE/Edge issue.
|---------|----------------|---------------------
|  16.3.1 |03 April 2018   |Prefix private API, Fix performance regression and error handling bugs in development mode, Add peer dependency, Fix a false positive warning in IE11 when using Fragment.
|---------|----------------|---------------------
|  16.3.2 |16 April 2018   |Fix an IE crash, Fix labels in User Timing measurements, Add a UMD build, Improve performance of unstable_observedBits API with nesting.
|---------|----------------|---------------------
|  16.4.0 |24 May 2018     |Add support for Pointer Events specification, Add the ability to specify propTypes, Fix reading context, Fix the getDerivedStateFromProps() support, Fix a testInstance.parent crash, Add React.unstable_Profiler component for measuring performance, Change internal event names.
|---------|----------------|---------------------
|  16.5.0 |05 September2018|Add support for React DevTools Profiler, Handle errors in more edge cases gracefully, Add react-dom/profiling, Add onAuxClick event for browsers, Add movementX and movementY fields to mouse events, Add tangentialPressure and twist fields to pointer event.
|---------|----------------|---------------------
|  16.6.0 | 23 October 2018|Add support for contextType, Support priority levels, continuations, and wrapped callbacks, Improve the fallback mechanism, Fix gray overlay on iOS Safari, Add React.lazy() for code splitting components.
|---------|----------------|---------------------
|  16.7.0 |20 December 2018|Fix performance of React.lazy for lazily-loaded components, Clear fields on unmount to avoid memory leaks, Fix bug with SSR, Fix a performance regression.
|---------|----------------|---------------------
|  16.8.0 |06 February 2019|Add Hooks, Add ReactTestRenderer.act() and ReactTestUtils.act() for batching updates, Support synchronous thenables passed to React.lazy(), Improve useReducer Hook lazy initialization API.
|---------|----------------|---------------------
|  16.8.6 |27 March 2019   |Fix an incorrect bailout in useReducer(), Fix iframe warnings in Safari DevTools, Warn if contextType is set to Context.Consumer instead of Context, Warn if contextType is set to invalid values.
|---------|----------------|---------------------
|  16.9.0 |9 August 2019   |Add <React.Profiler> API for gathering performance measurements programmatically. Remove unstable_ConcurrentMode in favor of unstable_createRoot
|---------|----------------|---------------------
|  16.10.0|27 September2019|Fix edge case where a hook update wasn't being memoized. Fix heuristic for determining when to hydrate, so we don't incorrectly hydrate during an update. Clear additional fiber fields during unmount to save memory. Fix bug with required text fields in Firefox. Prefer Object.is instead of inline polyfill, when available. Fix bug when mixing Suspense and error handling.
|---------|----------------|---------------------
|  16.10.1|28 September2019|Fix regression in Next.js apps by allowing Suspense mismatch during hydration to silently proceed
|---------|----------------|---------------------
|  16.10.2|3 October 2019  |Fix regression in react-native-web by restoring order of arguments in event plugin extractors
|---------|----------------|---------------------
|  16.11.0|22 October 2019 |Fix mouseenter handlers from firing twice inside nested React containers. Remove unstable_createRoot and unstable_createSyncRoot experimental APIs. (These are available in the Experimental channel as createRoot and createSyncRoot.)
|---------|----------------|---------------------
|  16.12.0|14 November 2019|React DOM - Fix passive effects (useEffect) not being fired in a multi-root app.React Is - Fix lazy and memo types considered elements instead of components
|---------|----------------|---------------------
|  16.13.0|26 February 2020|Features added in React Concurrent mode.Fix regressions in React core library and React Dom.
|---------|----------------|---------------------
|  16.13.1|19 March 2020   |Fix bug in legacy mode Suspense where effect clean-up functions are not fired. Revert warning for cross-component updates that happen inside class render lifecycles.
|---------|----------------|---------------------