Conventional HTML lets you submit data via forms to a website and the destination (target) is usually visible in the sourcecode. Now, with JS it's a bit more difficult. You have to go through the JS files and find out what happens and where all the data is being sent to.

Is there an easier way to pin down where my data ends up (i.e. what file/address it is being sent to)??

Something like: I click on the button and it shows me what type of action was used and the destination URL?!

I'm on Ubuntu.