mardi 31 janvier 2017

Detect external extension and notify user

So, I have this web page, and I encountered some extensions that are not 100% compatible with the page. I want to check if they are installed in the user's browser and notify the user that those are not compatible. I know I can't check their local files, and that I cannot access the extension's files unless they are marked as public. So, is there a way to check this sort of things?




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