<select id=one class="ui dropdown">
  <option value="a">A</option>
  <option value="b">B</option>
  <option value="c">C</option>
</select>

<select id=two>
  <option value="x">X</option>
  <option value="y">Y</option>
  <option value="z">Z</option>
</select>

$('.ui.dropdown').dropdown();

//I have templated lists that get swapped in and out
var one = document.getElementById("one");
var two = document.getElementById("two");
one.innerHTML = two.innerHTML;

$('.ui.dropdown').dropdown('refresh');
$('.ui.dropdown').dropdown('set selected', 'x');  //this doesn't work

setTimeout(function () {
   $(id).dropdown('set selected', value);
}, 1);

$(id).dropdown('set value', value)
setTimeout(function () {
    $(id).dropdown('set selected', value);
}, 1);