Uncaught Error: NOT_FOUND_ERR: DOM Exception 8 for appendChild call [duplicate]

Answer 1

don't pass a string, but an element

var link = document.createElement('a');
link.innerHTML = imagename;
link.id = "hostname";
link.href = destination;

var specialdiv = document.getElementById("specialdiv");
specialdiv.appendChild(link);

Answer 2

You are getting that error because appendChild takes DOM elements, not strings. You need to actually create a DOM element before using appendChild.

var anchor = document.createElement('a');
anchor.id = "hostname";
anchor.href = destination;
anchor.innerHTML = imagename;

var specialdiv = document.getElementById("specialdiv");
specialdiv.appendChild(anchor);