//Sliding down animation to drop-down
$('ul.dropdown').on('show.bs.dropdown', function (e) {
$(this).find('.dropdown-menu').first().stop(true, true).slideDown();
});
//Sliding up animation to dropd-down
$('ul.dropdown').on('hide.bs.dropdown', function (e) {
$(this).find('.dropdown-menu').first().stop(true, true).slideUp();
});This code describe Setting animation of sliding up and down to drop-down in bootstrap using JQuery.
