JAVASCRIPT

js copy a div

// Get the element
var elem = document.querySelector('#elem1');

// Create a copy of it
// The 'true' is to allow nested elements to be copied as well
var clone = elem.cloneNode(true);

javascript copy div element content

function CopyToClipboard(containerid) {
    var range = document.createRange();
    range.selectNode(document.getElementById(containerid));
    window.getSelection().removeAllRanges(range);
  	window.getSelection().addRange(range);
    document.execCommand("copy");
    alert("Text Copied to clipboard");
}

javascript copy content of one div to another

let content = $('div#first').html();
$('div#second').html(content);