<select class="form-control select2">
<option>Select</option>
<optgroup label="Alaskan/Hawaiian Time Zone">
<option value="AK">Alaska</option>
<option value="HI">Hawaii</option>
</optgroup>
</select>
<!-- select2 CSS -->
<link href="vendors/select2/dist/css/select2.min.css" rel="stylesheet" type="text/css" />
<!-- Select2 JavaScript -->
<script src="vendors/select2/dist/js/select2.full.min.js"></script>
<script src="dist/js/select2-data.js"></script>
/* Select2 Init*/
"use strict";
$(".select2").select2();
$("#input_tags").select2({
tags: true,
tokenSeparators: [',', ' ']
});