1.RN向webview传值&＃xff0c;js页面

import React, { Component } from &＃39;react&＃39;;
import {Text,View,WebView,StyleSheet,AppRegistry,TouchableOpacity,
} from&＃39;react-native&＃39;;
export default class MyWeb extends Component {constructor(props){super(props);this.state&＃61;{webstring:&＃39;&＃39;}}handleMessage(){const message &＃61; &＃39;hello web 199!&＃39;;this.webview.postMessage(message);//通过handleMessage向RN传递字符串Message,若写成ref&＃61;"wbview",这里写成this.refs.webview.postMessage(message)}render(){return ({this.state.webstring}简单的网页{ this.webview &＃61; webview;}} //或者可以写成&＃xff1a;ref&＃61;"webview"source&＃61;{require(&＃39;./html/aa.html&＃39;)}>);}
}
var styles &＃61;StyleSheet.create({webview:{backgroundColor:&＃39;#ffffff&＃39;,}
});html页面&＃xff1a;

Click on the header to alert its value

import React, { Component } from &＃39;react&＃39;;
import {Text,View,WebView,StyleSheet,AppRegistry,TouchableOpacity,
} from&＃39;react-native&＃39;;
export default class MyWeb extends Component {constructor(props){super(props);this.state&＃61;{webstring:&＃39;&＃39;}}render(){return ({this.state.webstring}简单的网页{ this.webview &＃61; webview;}}source&＃61;{require(&＃39;./html/aa.html&＃39;)}onMessage&＃61;{(event)&＃61;>{this.setState({webstring:event.nativeEvent.data})}}//通过这个函数接受webview传来的值>);}
}
var styles &＃61;StyleSheet.create({webview:{backgroundColor:&＃39;#ffffff&＃39;,}
});html页面&＃xff1a;

This is a header