How to append Element in box

Question

I want to create an element witg js

so i do

var e = document.createElement("div");
document.body.appendChild(e);

than, the element is placed after all other elemts inside the body tag.

How do i place it inside fe. a div element?

Thanks for answers 👌👌

Answer 1

var a=document.getElementByTagName("div");
var e=document.createElement("div");
a[0].appendChild(e);