how to reset select option in jquery\ code example

Example 1: reset select form jquery

$('select').each( function() {
        $(this).val( $(this).find("option[selected]").val() );
    });

Example 2: jquery select clear options

$('#mySelect')
    .find('option')
    .remove()
    .end()
    .append('<option value="whatever">text</option>')
    .val('whatever')
;