Get HTML content of webpage with webview

Question

I want to get html code with webview in react native my current code only can call alert function after its injected. i want to get a specific div html content.

  const jsCode = "window.postMessage(alert(document.getElementById('result')))"

<WebView 
            style={{width:Dimensions.get('window').width,height:Dimensions.get('window').height}}
            javaScriptEnabled ={true}
             injectedJavaScript={jsCode} 
            source={{uri: this.state.uri}}
      />

Answer 1

window.postMessage causes the WebView.onMessage-handler to get called with the data.

So this should work:

const jsCode = "window.postMessage(document.getElementById('gb-main').innerHTML)"

<WebView
  javaScriptEnabled={true}
  injectedJavaScript={jsCode}
  source={{uri: 'http://www.google.com/'}}
  onMessage={event => console.log('Received: ', event.nativeEvent.data)}
/>