There is a service that, having received an XML request, issues a standardized XML response, how can this be done so that it works “from a folder”?

Question

JavaScript

A question for connoisseurs: what is the best way to make such an application?
Needs:
* form for entering a request by code (typed) - saving the answer locally, the code is logged
* mechanism for entering requests for a file (a list of codes in a column - one code - one line) the
answer is displayed on the screen and stored in the log (locally? DB? )
* search form by code among those already checked (from the log) earlier, taking into account the date (that is, the code AAA BBB CCC was requested on 01-01-2014 14:45)
When entering the code, it must first be checked in the log whether it was recently requested ("recently" the time interval is set in the settings) and if so, it displays the answer without contacting the server (marked in a different color) if the operator clicks on the mark in the list, a request is sent to the server and the answer is updated on this code
. At the moment, this thing is written by me in C ++ and works successfully, but there were desires to use it on a poppy and an android phone (maybe later on an iPhone)
For me, the difficulty is that I have not yet made such web applications and from a bunch of technologies, the eyes just run up ... So I thought, maybe you can advise what to use in order to launch this without much shamanism? Thanks

Answer 1

Ajax for requests
https://github.com/pyrsmk/qwest BD
on the client
https://github.com/yathit/ydn-db