JSFiddle - React, Tailwind, and code Playground
HTML
<link rel="stylesheet" href="http://harvesthq.github.com/chosen/chosen/chosen.css">
<input type="button" id="add" value="Tambah">
<br><br><br>
<div class="content">
<em>Into This</em>
<select data-placeholder="Choose a Country" class="chzn-select" style="width:350px;" tabindex="4">
<option value=""></option>
<option value="United States">United States</option>
<option value="United Kingdom">United Kingdom</option>
<option value="Afghanistan">Afghanistan</option>
<option value="Aland Islands">Aland Islands</option>
<option value="Albania">Albania</option>
<option value="Algeria">Algeria</option>
<option value="American Samoa">American Samoa</option>
<option value="Andorra">Andorra</option>
<option value="Angola">Angola</option>
<option value="Anguilla">Anguilla</option>
<option value="Antarctica">Antarctica</option>
<option value="Antigua and Barbuda">Antigua and Barbuda</option>
<option value="Argentina">Argentina</option>
<option value="Armenia">Armenia</option>
<option value="Aruba">Aruba</option>
<option value="Australia">Australia</option>
<option value="Austria">Austria</option>
<option value="Azerbaijan">Azerbaijan</option>
<option value="Bahamas">Bahamas</option>
<option value="Bahrain">Bahrain</option>
<option value="Bangladesh">Bangladesh</option>
<option value="Barbados">Barbados</option>
<option value="Belarus">Belarus</option>
<option value="Belgium">Belgium</option>
<option value="Belize">Belize</option>
<option value="Benin">Benin</option>
...
JavaScript
<script>
var cloneCount = 1;
$("#add").click(function(e){
e.preventDefault();
var clone = $('.content').clone().attr('class', 'content'+ cloneCount++).insertAfter($('[class^=content]:last'));
})
$(".chzn-select").chosen();
</scrip>