Offline/online html manifest

Is it possible to access the “Manifest File”…

https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/Client-SideStorage/Client-SideStorage.html

…to temporarily store form submissions in the event that an user tries to submit a form to an online api/datastore?

Basically I have a form that gets submitted to salesforce that I need to be able to continue to collect data if the user loses connectivity temporarily. As soon as the the user comes back online, I need the data to submit to salesforce.

Make sense? Or do we have to send data to SQLlite/local db then reparse and submit all entries and clear out the db?

Thanks!

Is this a question related to using the WebView?