Get selected option on native javaScript

index.html

<select id="LOCATION" required>
      <option value="">Выберите регион</option>
      <option value="MSK">Москва</option>
      <option value="SPB">Санкт-Петербург</option>
      <option value="KRD">Краснодар</option>
</select>

script.js

var select = document.getElementById('LOCATION');

select.addEventListener('change', function() {
  var n = select.options.selectedIndex,
      textSelect = document.getElementById("LOCATION").options[n].text;
      
      console.log(textSelect)
})