How can I make Bootstrap's navigation popup smoothly up and down?

Question

My navigation is a regular Twitter bootstrap, except that I would like to use slide effects.

How can I make the dropdown menu on my Bootstrap navigation slide slide up and down?

Answer 1

Well, this was done by switching the class name according to what I compiled from http://twitter.github.com/bootstrap/assets/js/bootstrap-dropdown.js .

Anyway, you need to manually manually edit the JS drop-down list to support custom animation settings for opening and closing menus. It is very viable and I think something like this will work: https://gist.github.com/3013002

Warning This is not verified.

EDIT . This will make Bootstrap rely on jQuery.effects more. Just a head.

Answer 2

If someone needs it - check out my solution. Modified bootstrap-dropdown.js below. Instead of switching the display: no to display: block, I use slideToggle. And for bootstrap CSS, not for interception, I changed the class of the open menu item from "open" to "open".

/* ============================================================ * bootstrap-dropdown.js v2.3.0 * http://twitter.github.com/bootstrap/javascript.html#dropdowns * ============================================================ * Copyright 2012 Twitter, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ============================================================ */ !function ($) { "use strict"; // jshint ;_; /* DROPDOWN CLASS DEFINITION * ========================= */ var toggle = '[data-toggle=dropdown]' , Dropdown = function (element) { var $el = $(element).on('click.dropdown.data-api', this.toggle) $('html').on('click.dropdown.data-api', function () { $(toggle).next('ul').slideToggle(); $el.parent().removeClass('opened') }) } Dropdown.prototype = { constructor: Dropdown , toggle: function (e) { var $this = $(this) , $parent , isActive if ($this.is('.disabled, :disabled')) return $parent = getParent($this) isActive = $parent.hasClass('opened') clearMenus() if (!isActive) { $(this).next('ul').slideToggle(); $parent.toggleClass('opened') } $this.focus() return false } , keydown: function (e) { var $this , $items , $active , $parent , isActive , index if (!/(38|40|27)/.test(e.keyCode)) return $this = $(this) e.preventDefault() e.stopPropagation() if ($this.is('.disabled, :disabled')) return $parent = getParent($this) isActive = $parent.hasClass('opened') if (!isActive || (isActive && e.keyCode == 27)) { if (e.which == 27) $parent.find(toggle).focus() return $this.click() } $items = $('[role=menu] li:not(.divider):visible a', $parent) if (!$items.length) return index = $items.index($items.filter(':focus')) if (e.keyCode == 38 && index > 0) index-- // up if (e.keyCode == 40 && index < $items.length - 1) index++ // down if (!~index) index = 0 $items .eq(index) .focus() } } function clearMenus() { $(toggle).each(function () { if (getParent($(this)).hasClass('opened')) { $(this).next('ul').slideToggle(); getParent($(this)).removeClass('opened'); } }) } function getParent($this) { var selector = $this.attr('data-target') , $parent if (!selector) { selector = $this.attr('href') selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7 } $parent = selector && $(selector) if (!$parent || !$parent.length) $parent = $this.parent() return $parent } /* DROPDOWN PLUGIN DEFINITION * ========================== */ var old = $.fn.dropdown $.fn.dropdown = function (option) { return this.each(function () { var $this = $(this) , data = $this.data('dropdown') if (!data) $this.data('dropdown', (data = new Dropdown(this))) if (typeof option == 'string') data[option].call($this) }) } $.fn.dropdown.Constructor = Dropdown /* DROPDOWN NO CONFLICT * ==================== */ $.fn.dropdown.noConflict = function () { $.fn.dropdown = old return this } /* APPLY TO STANDARD DROPDOWN ELEMENTS * =================================== */ $(document) .on('click.dropdown.data-api', clearMenus) .on('click.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() }) .on('.dropdown-menu', function (e) { e.stopPropagation() }) .on('click.dropdown.data-api' , toggle, Dropdown.prototype.toggle) .on('keydown.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown) }(window.jQuery); 

Answer 3

I did not check if this works with older versions of Bootstrap, but with v3 you can associate events that are triggered when you click the drop-down switch. This way you do not need to edit the JS source code.

 $(document).on("hide.bs.dropdown", ".dropdown", function (event) { $(event.target).find(">.dropdown-menu:first").slideUp(); }); $(document).on("show.bs.dropdown", ".dropdown", function (event) { $(event.target).find(">.dropdown-menu:first").slideDown(); });