JAVASCRIPT

jquery remove option from select by value

$("#FIELDID option[value='X']").remove();

jquery remove options from select then add new options

$('#mySelect')
  .empty() /*remove all items*/
  .append('<option value="whatever">text</option>') /*add new items*/
  .val('whatever'); /*set value*/

select remove option jquery

$('.ct option').each(function() {
    if ( $(this).val() == 'X' ) {
        $(this).remove();
    }
});

jquery remove option from select

$("#select-list").empty()