Решено
var selectList = document.createElement("select");
selectList.className = "fieldtype";
@string.Format("var fType = {{{0}}}; ", string.Join(",", Enum.GetNames(typeof(templateDDL)).ToList().ConvertAll(key => { return string.Format("{0}: {1}", key, (int)((templateDDL)Enum.Parse(typeof(templateDDL), key))); }).ToArray()))
$.each(fType, function (i, items) {
var option = new Option(i, items);
selectList.appendChild(option);
});