# react-native-webview2

This is the WebView or Web component in React Native both for Android and iOS, support auto height & call js (not support on ios) between component and html document, very useful & easily!

This is a JavaScript-only implementation of WebView in React Native, named react-native-webview2 or WebView or Web.

1. react-native-webview2 can change the height of WebView dynamically when you set the prop source={uri:xxx}(until now not yet support html) if you not set the prop style={height:xxx}, otherwise the height of WebView is fixed.
2. react-native-webview2 also can make you call js in html document or reactnative, if you want to call js in html page from react-native, you just invoke this.web.evalJs("js code...here") from react-native. If you want to call react-native code, you just invoke returnEval("rn code...here") from html page, meanwhile set the prop evalReturn={((r) => {eval(r)}).bind(this)}.
3. react-native-webview2 support all props of WebView in React Native.

WebView demo project: https://github.com/greatbsky/react-native-webview2-demo

WebView Demo

WebView Usage

1. Run npm install react-native-webview2@latest --save
2. Code like this:

import Web from 'react-native-webview2';

<Web
  ref={(c) => {this.web = c}}
  evalReturn={((r) => {eval(r)}).bind(this)}
  source={{uri: 'xxx'}}
  style={[styles.web, {minHeight: 300}]}
  ...other props
  />

3. Full demo code: https://github.com/greatbsky/react-native-webview2-demo/blob/master/WebView2App/app.js

WebView configuration

special props for WebView

• evalJs: (not support on ios) handle function if you want to call js in html page from react-native. eg: this.web.evalJs('var t = document.title; alert(t)');
• evalReturn: require if you need call js fun in react-native from html page. evalReturn={((r) => {eval(r)}).bind(this)}.
• go: handle function if you need open a new uri. eg: this.web.go('http://xxxxxx');

other

• returnEval: js function in html page if you want to call js in react-native from html page, eg:returnEval('this.setText("from html page...")'), usually you also need set the prop of component evalReturn={((r) => {eval(r)}).bind(this)}

Licensed

MIT License

中文说明请参见

https://github.com/greatbsky/react-native-webview2/wiki