JSFiddle - React, Tailwind, and code Playground

HTML

<link href="http://code.jquery.com/mobile/latest/jquery.mobile.min.css" rel="stylesheet" type="text/css" />
<script src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<script src="http://code.jquery.com/mobile/latest/jquery.mobile.min.js"></script>
<div data-role="page" id="main_page">

  <div data-role="header" role="banner" data-position="inline" data-theme="e">
    <h1 role="heading">Selectmenu encoding</h1>
  </div>  <!-- /header main -->

  <div data-role="content" id="main_content">
      
    <select id="sel" data-native-menu="false" multiple="true">
        <option value=""></option>
        <option value="1">1</option>
        <option value="2">2</option>
    </select>
  </div>
</div>

JavaScript

$("#sel").change(function(){
        alert("Test");
    });