Inside the html form tag, we faced a situation where we had to implement a button independent of the form.

Even if you use button, it is fine as long as the type is not submit

Button/button (Markup became right away, so I omitted < >) Buttons are made even if you leave them like this

Now, when you click Add, you can create a function to add to the list and call it like button onclick= function()

Ahref actually looks similar to Button if you give it a border style, so there's a way like that