looking for concept assistance with javascript, css and html

looking for concept assistance with javascript, css and html

I am messing around with javascript and css trying to get my website to be
more interactive. I am now looking to do two things, I need the user to be
able to input a list of names first, then I want to go back and list the
entered names in a column and have the user enter more information such as
height and weight and skill level in additional columns.
I figure I will use an array for the first part, but for the first part, I
am trying to find if there are other ways besides a form to do the second
part.
Is an array the best way to do the first part, and can I build a form on
the fly, or is there a better way to enter the data?
Thanks in advance for the assistance.