启用:

$('#id').next().children('div:first').css({"cursor": "auto", "background-color": "unset", "opacity": "unset"});
$('#id').next().children('div:eq(1)').removeAttr("style");
$('#id').next().children('div:eq(1)').addClass("searchable-select-hide");

禁用:

$('#id').next().children('div:first').css({"cursor": "not-allowed", "background-color": "#eee", "opacity": "1"});
$('#id').next().children('div:eq(1)').hide();