Question

How can I implement prepend and append with regular JavaScript without using jQuery?

Answer 1

Perhaps you’re asking about the DOM methods appendChild and insertBefore.

parentNode.insertBefore(newChild, refChild)

Inserts the node newChild as a child of parentNode before the
existing child node refChild. (Returns newChild.)

If refChild is null, newChild is added at the end of the list of
children. Equivalently, and more readably, use
parentNode.appendChild(newChild).