This is a really dumb question but what exactly happens when a user submits form input after clicking the submit button?
Like… where does it go?
I know technically it goes to the link the action points to, but how does it get there? Does it just show up as plaintext or something?
It needs a backend to be stored. If it doesnt have that, it just simply goes no where
Your form information will be sent to the server script via query string attached to the end of your http address.
Hmm I never wonder under which kind of format the data are send I just know that we can access data or variable name in the page action points to. But for the answer on your title question: action attribute defines a target page for processing form data, page where you can choose what to do with what you receive: check the validity, store into a database, etc