document.apprndChild() code example
Example 1: JavaScript append text to div
var div = document.getElementById('myElementID');
div.innerHTML += "Here is some more data appended";
Example 2: add a child html object to another html object in js
//Add child at end of object children list
parent.append(child);
//Add child at start of object children list
parent.insertBefore(child, list.childNodes[0]);