JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/mobile/1.0rc1/jquery.mobile-1.0rc1.min.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0rc1/jquery.mobile-1.0rc1.min.css">
<select id="dropdown1" onchange"doSomething()">
  <option value="0">none</option>
  <option value="1">test</option>
</select>

JavaScript

function doSomething() {alert ('me cago');}

$("select#dropdown1 option").removeAttr("selected");

alert(2);

$("select#dropdown1 option[value='1']").attr('selected', 'selected').selectmenu("refresh");

alert(3);