Can I use API_DoQuery to automatically relate records to different parents?

Thanks for the link Rob. I'm familiar enough with javascript to get the general gist of what's going on in that code. What I don't understand is how I fit that sort of thing into my app. Until now I've been using the API in a fairly limited fashion, with simple webhooks and url fields and I just don't get how I go from there to using that javascript code in any practical fashion.