special-code | 这里存放着江程训写的瞎几把炫酷的特效，Amen

The Ajax at the top is for submitting the form and calling add.php, but you want an Ajax that calls delete.php. Since you've already written the first Ajax, you should know how to write the second Ajax. So will not touch that part, and will only answer your questions.

what I need to do is call a "delete.php" on every row via a button or anchor link.

Bothe will work. However, if you go with links, you've got to cancel their default behavior like you did with the submit button using e.preventDefault(); in the click event.

Seems like I should enumerate the rows somehow so that said link has an identifier (like , etc.), and perhaps I could use innerhtml to read what is in those id's.

You can do that, but I would store the ID in a data-id attribute of each link. Something like: