phonegap update file from external server

hi i have a fully working phonegap application with a number of files (both .csv and .jpg) that i would like to check for updates on a web server (say ex开发者_StackOverflow社区ample.com/app) when certain pages are loaded. if there are new files i would like to overwrite the files on the phone app with these updated files

for example:

when you click to:

page2.html, check for updates on 2.csv and 2.jpg

Thanks in advice

Tim

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You should look into client side HTML5 storage.

I'm using the HTML5 sqllite database to store json objects relating to each page within my app. I then have a master configuration file which is in essence a sitemap with each app page, and a timestamp, when I check against the webserver configuration file copy I run a comparison to see if any files are out of date/even new and if so download and store within the client database.

Also take a look at

https://github.com/brianleroux/lawnchair

http://sixrevisions.com/web-development/html5-iphone-app/

Hope this helps

regards Andrew

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On the HTML page, the same originator rule will restrict you from reading the files in javascript. I guess you have to create a method in the phonegap wrapper which will check for the files. This method can be called from within javascript.