var t = document.createElement('template'); t.innerHTML = '<tr><td class="col-md-1"></td><td class="col-md-4"><a></a></td><td class="col-md-1"><a><span class="glyphicon glyphicon-remove" aria-hidden="true" /></a></td><td class="col-md-6" /></tr>'; var template = t.content.firstChild; function childNodes(tree) { let index = 0; const result = {}; const walk = (node) => { result[index++] = node; node.childNodes.forEach(walk); }; walk(tree); return result; } function nextSibling(tree) { let index = 0; const result = {}; const walk = (node) => { result[index++] = node; let child = node.firstChild; while(child) { walk(child); child = child.nextSibling; } }; walk(tree); return result; }