Простой ajax на select

(function() { 
  const select_form = document.getElementById('auc-form'); 
  const model_select = document.getElementById('auc-model'); 
 
  document.addEventListener('change', function(e) { 
 
    if (e.target.id == 'auc-make') { 
      console.log(e.target.value) 
 
      let url = '/getmodel/' + e.target.value; 
 
 
 
      $.getJSON(url, function(data) { 
        // let select_option_prev = document.getElementById('auc-model'); 
        // select_option_prev.remove(select_option_prev.selectedIndex); 
 
        for (i = 0; i < data.length; i++) { 
 
 
          let option = document.createElement('option'); 
          option.innerHTML = data[i]; 
          option.value = data[i]; 
          model_select.insertBefore(option, model_select.firstChild); 
        } 
 
 
      }); 
 
    } 
  }); 
})();