Question

I want to get active window’s cookie information in an extension built with the Add-on SDK. How can I do this? I couldn’t find any method in documentation that has access to window or document. Also in some forums, folks talk about there is no way to access to them. Is it really not possible still?

Answer 1

You can access document and therefore document.cookie via a content script; for more on working with content scripts, see the documentation:

https://addons.mozilla.org/en-US/developers/docs/sdk/latest/dev-guide/tutorials/modifying-web-pages-url.html

Edit: here’s a simple example that allows you to fetch cookie data for the current tab into the addon’s main code:

https://github.com/canuckistani/jp-page-mod-cookie