removing all options of select box except 1st option

Question

I\'m trying to empty select options when:

id \"mClick\" is selected, id\'s \"sClick\", \"cClick\" and \"srClick\" will be emptied.

id \"sClick\" is selected,

Answer 1

Try this

$('#lForm select').change(function(){
   var $selects = $('#lForm select');
   var idx = $selects.index(this);

   // Use `val` function to clear the selected values or Use `remove` function to remove the element.
   $selects.filter(':gt(' + idx +')').val('');

});