JSFiddle - React, Tailwind, and code Playground

HTML

<select class="form-control" id="dropdownRequete">
   <option selected disabled value="-1">REQUETE ENREGISTREE</option>
   <option value="requete 1">requete 1</option>
   <option value="requete 2">requete 2</option>
   <option value="requete 3">requete 3</option>
   <option value="requete 4">requete 4</option>
   <option value="requete 5">requete 5</option>
   </select>

JavaScript

$( function(){

$( "#dropdownRequete" ).on('change', function() {
            alert( $(this).val() );
        })
})