firefox extension javascript storage

I want to pr开发者_运维知识库ogram a firefox formfiller extension. What I don't quite understand is how do I save my content. To a sqllite file or are there other ways to do it and how would the javascript code look like?

cheers, US

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First result for "extension storage javascript": https://developer.mozilla.org/en/storage (see also the first note on that page)