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This Planet is a Tedious Place...

16/01/12 How to detect an installed Chrome extension in a normal web page?

I searched for a while and was struggling to come up with a way to do this. Several people were suggesting that the extension should write an element into the page using a content script and then page could the check for it's existence. This seemed a bit inelegant and would also require a new version of the extension.

Then I found this gem from Gildas on the Chromium forums, which attempts to load an image resource from the extension:

function detectExtension( extensionId, callback ) 
{ 
  var img; 
  img = new Image(); 
  img.src = "chrome-extension://" + extensionId + "/icon16.png"; 
  img.onload = function() { callback( true ); }; 
  img.onerror = function() { callback( false ); }; 
}

Works a treat - just make sure that the file referenced, icon16.png in this case, is present in your extension folder.

posted by Gruntfuggly # 22:32 1 comment

Very good info buddy i ve used animated favicon on my site too :D

Somebody # 13/11/12 01:27



Somebody # 03/12/24 11:51

 

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