JSFiddle - React, Tailwind, and code Playground

HTML

<select id="profile_family" name="families" class="form-control">  
     <option  value="apple">Apple</option>
      <option  value="banana">Banana</option>
      <option  value="mango">Mango</option>
                      </select>
                      <br />
                      <br />
                      <input type="button" id="createBox" class="btn btn-primary"  value="Create profile" />

JavaScript

$("#createBox").click(function(){
        //$('#profile_family').on('change', function() {
            alert( $(this).val() ); // or $(this).val()
         //});
      });