select-1password.js

var $select = $('#id_donate_state');
var lastSelectVal = null;
$select.on('change', function(e) {
  var val = e.target.value;
  var isUnSelected = val === '' || _.isUndefined(val) || _.isNull(val);

  if (isUnSelected) {
    this.value = lastSelectedVal;
  } else {
  lastSelectedVal = val;
  }
});

let selects = document.querySelector('.form-content').querySelectorAll('select');
selects = [...selects];

selects.forEach((select) => {
  select.addEventListener('change', (e) => {
    const val = e.target.value;
    const isUnSelected = val === '' || _.isUndefined(val) || _.isNull(val);

    if (isUnSelected) {
      select.value = lastSelectedVal;
    } else {
      lastSelectedVal = val;
    }
  }, false);
})