JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdn.kendostatic.com/2012.1.124/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.124/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.124/styles/kendo.default.min.css">

<select id="test">
    <option value="" selected="selected">Select a value</option>
    <option value="option1">Option 1</option>
    <option value="option2" >Option 2</option>
</select><br /><br />
<button id="clickMe">Click Me</button>
<br />
<br />
<label>Value <input id="selectValue" type="text"></label>

JavaScript

function onClick() {
    var v = $('#test').data('kendoDropDownList').value();
    $('#selectValue').val(v)
}

$(function() {
    $('#test').kendoDropDownList();
    $('#clickMe').addClass('k-button').on('click', onClick);
});