Offline cache of data in tablet for a asp.net MVC2 web app

I need to give a survey(an asp.net MVC2 web app) to people on a tablet device. The survey runs on a browser which might suf开发者_StackOverflow中文版fer from internet outage, hence I need to have the device sync whenever its online. How can I cache data while the device is offline ?

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One way of doing this would be with HTML 5 Local Storage.

http://www.kirupa.com/html5/html5_local_storage.htm