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react-native-web
Advanced tools
The react-native-web package allows you to use React Native components and APIs to build web applications. It provides a way to write a single codebase that can run on both mobile and web platforms, leveraging the same React Native components.
Cross-Platform Components
This feature allows you to use React Native components like View and Text to build web applications. The code sample demonstrates a simple app that displays 'Hello, world!' using React Native components.
import { View, Text } from 'react-native';
import { AppRegistry } from 'react-native-web';
const App = () => (
<View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
<Text>Hello, world!</Text>
</View>
);
AppRegistry.registerComponent('App', () => App);
AppRegistry.runApplication('App', { initialProps: {}, rootTag: document.getElementById('app') });
StyleSheet for Web
This feature allows you to use the StyleSheet API from React Native to style your web components. The code sample shows how to create and apply styles using StyleSheet.
import { StyleSheet, View, Text } from 'react-native';
import { AppRegistry } from 'react-native-web';
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
});
const App = () => (
<View style={styles.container}>
<Text style={styles.welcome}>Welcome to React Native Web!</Text>
</View>
);
AppRegistry.registerComponent('App', () => App);
AppRegistry.runApplication('App', { initialProps: {}, rootTag: document.getElementById('app') });
Event Handling
This feature allows you to handle events such as button presses using React Native's event handling system. The code sample demonstrates a button that shows an alert when pressed.
import { View, Button, Alert } from 'react-native';
import { AppRegistry } from 'react-native-web';
const App = () => (
<View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
<Button
title="Press me"
onPress={() => Alert.alert('Button pressed!')}
/>
</View>
);
AppRegistry.registerComponent('App', () => App);
AppRegistry.runApplication('App', { initialProps: {}, rootTag: document.getElementById('app') });
react-native-dom is another package that aims to bring React Native to the web. It provides a similar set of components and APIs as react-native-web but focuses more on integrating with the DOM directly. It is less mature and has a smaller community compared to react-native-web.
react-primitives is a package that provides a set of primitive components that work across multiple platforms, including web, iOS, and Android. It is more lightweight compared to react-native-web and focuses on providing a minimal set of components for cross-platform development.
reactxp (React Cross-Platform) is a library developed by Microsoft that allows you to build cross-platform apps using React and React Native. It provides a unified API for building apps that run on web, iOS, Android, and Windows. It is more opinionated and comes with its own set of components and APIs.
The core React Native components adapted and expanded upon for the web, backed by a precomputed CSS library. ~19KB minified and gzipped.
npm install --save react react-native-web
React Native for Web exports its components and a reference to the React
installation. Styles are authored in JavaScript as plain objects.
import React, { View } from 'react-native-web'
class MyComponent extends React.Component {
render() {
return (
<View style={styles.root} />
)
}
}
const styles = {
root: {
borderColor: 'currentcolor'
borderWidth: '5px',
flexDirection: 'row'
height: '5em'
}
}
Image
An accessibile image component with support for image resizing, default image, and child content.
ListView
(TODO)
ScrollView
(TODO)
Swipeable
Touch bindings for swipe gestures.
Text
Displays text as an inline block and supports basic press handling.
TextInput
Accessible single- and multi-line text input via a keyboard. Supports features
Touchable
Touch bindings for press and long press.
View
The fundamental UI building block: layout with flexbox, layout and positioning styles, and accessibility controls.
React Native for Web provides a mechanism to declare all your styles and layout
inline with the components that use them. The View
component makes it easy to
build common layouts with flexbox, such as stacked and nested boxes with margin
and padding.
Styling is identical to using inline styles in React, but most inline styles are converted to single-purpose classes. The current implementation includes 300+ precomputed CSS declarations (~4.5KB gzipped) that cover a large proportion of common styles. A more sophisticated build-time implementation may produce a slightly larger CSS file for large apps, and fall back to fewer inline styles. Read more about the styling strategy.
See this guide to flexbox.
import React, { Image, Text, View } from 'react-native-web'
class App extends React.Component {
render() {
return (
<View style={styles.row}>
<Image
source={{ uri: 'http://facebook.github.io/react/img/logo_og.png' }}
style={styles.image}
/>
<View style={styles.text}>
<Text style={styles.title}>
React Native Web
</Text>
<Text style={styles.subtitle}>
Build high quality web apps using React
</Text>
</View>
</View>
)
},
})
const styles = {
row: {
flexDirection: 'row',
margin: 40
},
image: {
height: 40,
marginRight: 10,
width: 40,
},
text: {
flex: 1,
justifyContent: 'center'
},
title: {
fontSize: '1.25rem',
fontWeight: 'bold'
},
subtitle: {
fontSize: '1rem'
}
}
Combine and override style objects:
import baseStyle from './baseStyle'
const buttonStyle = {
...baseStyle,
backgroundColor: '#333',
color: '#fff'
}
Please read the contribution guidelines. Contributions are welcome!
Thanks to current and past members of the React and React Native teams (in particular Vjeux and Pete Hunt), and Tobias Koppers for Webpack and CSS loader.
Thanks to react-swipeable
for the current implementation of Swipeable
, and to
react-tappable for backing the
current implementation of Touchable
.
Copyright (c) 2015 Nicolas Gallagher. Released under the MIT license.
FAQs
React Native for Web
The npm package react-native-web receives a total of 515,298 weekly downloads. As such, react-native-web popularity was classified as popular.
We found that react-native-web demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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