If I have text fields dynamically created on a page via JavaScript, and they are named along the lines of "textbox1", "textbox2", "textbox3", etc, and there is no limit to how many extra textboxes the user can add, how would you find how many textboxes were displayed on the previous page once you get to your form submission page?
why not update a hidden form element with the number of textboxes that are added through javascript...later on the server-side u can use this count to loop through the textboxes