'use strict';
document.querySelectorAll('form[data-confirm]').forEach(form => {
  form.addEventListener('submit', event => {
    if (!window.confirm(form.dataset.confirm)) event.preventDefault();
  });
});
const filters = document.getElementById('income-filters');
if (filters) filters.addEventListener('submit', () => {
  filters.querySelectorAll('select').forEach(select => { if (!select.value) select.disabled = true; });
});