Answers for "javascript append div to another div"

how to appendChild in the begin of the div javascript

var element = document.getElementById("div1");
element.insertBefore(para, element.firstChild);

javascript insert div into another div

var div = document.getElementById('myElementID');
div.innerHTML += "Here is some more data appended";

javascript insert div into another div

var div = document.getElementsByClassName('bottom-footer');
    div[0].innerHTML += '<div> <span>  © Copyright 2021 <a href="http://softskills.anohadigital.com/">SOFT-SKILLS</a>. Tous droits réservés. </span> </div>';