removeChildOptions

receptRemoveChildOptions.js

function removeOptionExeptFirstAndCurrent(e) {
  var select = e.target;
  var selected_value = options[options.selectedIndex].value;

  while(select.children[1]) {
    if (select.childElementCount == 2) break;
    if (select.children[1].value == selected_value) {
      select.removeChild(select.children[2]);
      continue;
    }
    select.removeChild(select.children[1]);
  }
}

document.querySelector('select').addEventListener('change', removeOptionExeptFirstAndCurrent);