I need to display confirm box(yes or no) for saving data after closed tab in google chrome extension.
Also when user click on yes/no button then call function so that i can save data in cache/cookies/localstorage.
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Have you bumped with [this SO post (Confirmation before closing of tab/browser)](https://stackoverflow.com/questions/10311341/confirmation-before-closing-of-tab-browser)? – MαπμQμαπkγVπ.0 May 13 '19 at 09:19
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No. That's web page code which you shared but the question of google extension development. – npsingh May 13 '19 at 11:40