基于HTML5折叠卡片式下拉菜单代码

基于HTML5折叠卡片式下拉菜单代码。这是一款基于jQuery+CSS3+HTML5实现的下拉列表框特效代码。效果图如下：

实现的代码。

hmtl代码：

<div class="container">
        <div class="card-drop">
            <a class='toggle' href="#">
                <i class='fa fa-suitcase'></i>
                <span class='label-active'>爱编程</span>
            </a>
            <ul>
                <li class='active'>
                    <a data-label="Everyting" href="#"><i class='fa fa-suitcase'></i> 爱编程</a>
                </li>
                <li>
                    <a data-label="Design" href="#"><i class='fa fa-magic'></i> jQuery特效</a>
                </li>
                <li>
                    <a data-label="UI-UX" href="#"><i class='fa fa-bolt'></i> CSS3特效</a>
                </li>
                <li>
                    <a data-label="Print" href="#"><i class='fa fa-tint'></i> HTML5特效</a>
                </li>
                <li>
                    <a data-label="Photography" href="#"><i class='fa fa-camera-retro'></i> 音效下载</a>
                </li>
                <li>
                    <a data-label="Photography" href="#"><i class='fa fa-camera-retro'></i> flash动画</a>
                </li>
            </ul>
        </div>
    </div>

js代码：

(function ($) {
           var cards = $('.card-drop'), toggler = cards.find('.toggle'), links = cards.find('ul>li>a'), li = links.parent('li'), count = links.length, width = 100;
           li.each(function (i) {
               $(this).css('z-index', count - i);
           });
           function setClosed() {
               li.each(function (index) {
                   $(this).css('top', index * 4).css('width', width - index * 0.5 + '%').css('margin-left', index * 0.25 + '%');
               });
               li.addClass('closed');
               toggler.removeClass('active');
           }
           setClosed();
           toggler.on('mousedown', function () {
               var $this = $(this);
               if ($this.is('.active')) {
                   setClosed();
               } else {
                   $this.addClass('active');
                   li.removeClass('closed');
                   li.each(function (index) {
                       $(this).css('top', 60 * (index + 1)).css('width', '100%').css('margin-left', '0px');
                   });
               }
           });
           links.on('click', function (e) {
               var $this = $(this), label = $this.data('label');
               icon = $this.children('i').attr('class');
               li.removeClass('active');
               if ($this.parent('li').is('active')) {
                   $this.parent('li').removeClass('active');
               } else {
                   $this.parent('li').addClass('active');
               }
               toggler.children('span').text(label);
               toggler.children('i').removeClass().addClass(icon);
               setClosed();
               e.preventDefault;
           });
       }(jQuery));

via：http://www.w2bc.com/article/html5-fade-out-in-nav

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