How to Fix \'runtime.lastError\' Errors Caused by Orphaned Content Scripts in Chrome Extensions?

Resolving Orphaned Scripts after Chrome Extension Update

Problem:

After accidentally reloading a Chrome extension, a "runtime.lastError" error occurs due to an "orphaned" content script, resulting in communication failure between the popup and content pages.

Solution:

To address this issue, you can utilize window messages to broadcast a signal from your re-injected content script to the orphaned script. The orphaned script will then deregister its listeners, making it available for garbage collection.

Implementation:

background.js

Implement content script reinjection on extension reload/installation.

content.js

• Generate a unique orphan message ID using chrome.runtime.id.
• Dispatch the orphan message ID event and add an event listener to handle it.
• Register all listeners with named functions to preserve object references.
• Use running = true to indicate an active content script.

unregisterOrphan Function

• Verify if the extension is active.
• Remove the orphan message listener and all other event listeners.

onMessage Function

• Handle incoming messages.

onMouseMove Function

• Execute DOM event handling, checking for orphan status before processing.

popup.js

• Ensure that a content script is injected before sending messages.
• Implement functions to check for active content scripts and inject one if necessary.

By following these steps, you can remove orphaned content scripts and restore communication between your extension's components.

The above is the detailed content of How to Fix \'runtime.lastError\' Errors Caused by Orphaned Content Scripts in Chrome Extensions?. For more information, please follow other related articles on the PHP Chinese website!