Chrome extension analyse DOM in background.js?

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I have an extension that has permission to access only one site.

I am loading a page via ajax every few minutes, then I seek for certain element attributes with document.querySelector.

This is easy if the user is viewing that site (in content script), but if not, can I analyse the page content in background.js ? There is no document object available in background. Or can i somehow append the page to the pageaction popup ?

asked 24 secs ago

NestedWeb

325

Chrome extension analyse DOM in background.js?