JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.0.0.min.js"></script>
 <select id="locale" name="locale">
   <option value="en_US" title = '0'>English(US)</option>
   <option value="en_GB" title = '1'>English(UK)</option>
   <option value="bg_BG" title = '2'>Bulgarian</option>
   <option value="cs_CS" title = '3'>Czech</option>
   <option value="da_DK" title = '4'>Danish</option>
   <option value="de_DE" title = '5'>German</option>
   <option value="ek_GR" title = '6'>Greek</option>
   <option value="es_ES" title = '7'>Spanish</option>
   <option value="et_ET" title = '8'>Estonian</option>
   <option value="fi_FI" title = '9'>Finnish</option>
   <option value="fr_FR" title = '10'>French</option>
   <option value="hu_HU" title = '11'>Hungarian</option>
   <option value="it_IT" title = '12'>Italian</option>
   <option value="lt_LT" title = '13'>Lithuanian</option>
   <option value="lv_LV" title = '14'>Latvian</option>
   <option value="nl_NL" title = '15'>Dutch</option>
   <option value="no_NO" title = '16'>Norwegian</option>
   <option value="pl_PL" title = '17'>Polish</option>
   <option value="pt_PT" title = '18'>Portugese</option>
   <option value="ro_RO" title = '19'>Romanian</option>
   <option value="sk_SK" title = '20'>Slovak</option>
   <option value="sl_SL" title = '21'>Slovenian</option>
   <option value="sv_SE" title = '22'>Swedish</option>
</select>

JavaScript

document.getElementById("locale").addEventListener('change', function(event) {
	var selected = event.target.options[ event.target.selectedIndex ].value 
  console.log(selected);
  window.location.hash = selected; 
});