如何使Bootstrap的導航下拉幻燈片順利上下滑動？

Question

我的導航是Twitter的常規Bootstrap，除了我想要有一些幻燈片效果。

如何使我的Bootstrap導航幻燈片上的下拉菜單平滑上下？

Answer 1

那麼，它是由按照什麼我從http://twitter.github.com/bootstrap/assets/js/bootstrap-dropdown.js聚集切換類名行..

如果有什麼事情，你必須正確地手動編輯下拉JS以支持動畫自定義設置打開和關閉菜單。這是非常可行的，我認爲這樣的事情會起作用：https://gist.github.com/3013002

警告這還沒有經過測試。

編輯：這會導致Bootstrap依賴jQuery.effects更多。只是一個頭。

Answer 2

如果有人需要 - 檢查我的解決方案。下面修改了bootstrap-dropdown.js。 而不是切換顯示：無顯示：塊，我使用slideToggle。並且爲了引導CSS不要中斷我已經將打開的菜單項的類從「打開」更改爲「打開」。

/* ============================================================ 
* 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

我沒有檢查，看看這是否與舊版本的引導，但隨着V3，您可以扎入被點擊下拉菜單切換時被解僱的事件。這樣你就不必編輯源代碼。

$(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(); 
});