Fixing WebView JavaScript Execution in React Native

Why is my WebView not executing JavaScript even after I have set javaScriptEnabled={true}?

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Based on your question about WebView not executing JavaScript even after setting javaScriptEnabled={true}, I see you’re trying to work with WebView in React Native, likely for displaying 360° content. This is a common issue that can have several causes. Let me help you troubleshoot this.

Here are the key things to check:

1. Ensure you have the correct WebView configuration:

<WebView
  source={{ uri: 'your-url' }}
  javaScriptEnabled={true}
  domStorageEnabled={true}
  startInLoadingState={true}
  scalesPageToFit={true}
  allowFileAccess={true}
  allowUniversalAccessFromFileURLs={true}
  allowFileAccessFromFileURLs={true}
/>

2. For iOS specifically, make sure you’ve configured your Info.plist to allow arbitrary loads:

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSAllowsArbitraryLoads</key>
  <true/>
</dict>

3. If you’re loading local HTML files, ensure the correct path format:

source={{ uri: 'file:///path/to/your/file.html' }}
// or
source={require('./path/to/your/file.html')}

4. Add onMessage and injectedJavaScript props if you need to communicate between React Native and WebView:

<WebView
  injectedJavaScript={`
    // Your JavaScript code here
    true; // note: this is required
  `}
  onMessage={(event) => {
    console.log(event.nativeEvent.data);
  }}
/>

Looking at successful implementations in our community:

1. Here’s a working example with Pannellum viewer: HowTo: React Native with Pannellum 360 Viewer

2. Another successful implementation with Marzipano: HowTo: Marzipano Free 360 Image Viewer with React Native and WebView

If you’re still having issues, could you:

1. Share your complete WebView configuration
2. Specify whether you’re loading local or remote content
3. Share any console errors you’re seeing
4. Indicate which platform (iOS/Android) you’re experiencing this on

This will help me provide more specific guidance for your use case.