title: How to best test JS code and effect of interaction with data file
body: <p>Can anyone tell me what's the best way to test JavaScript code (particularly linking it to a  data file e.g. csv or Json) without it being in a server (i.e. from desktop). I'd like to create and test the JS on my machine before deploying it to the work intranet. Not had much experience with running server on laptop so would like to avoid this if possible. </p>