jQuery实现精美的多级下拉菜单特效

这是一款精美的多级下拉菜单美化,可以完美替代“select”来实现下拉菜单的效果。而且支持多级菜单，有加载等待效果，有层级分类展示。

代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Filament Group Lab</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="fg.menu.js"></script>
<link type="text/css" href="fg.menu.css" media="screen" rel="stylesheet" />
<link type="text/css" href="theme/ui.all.css" media="screen" rel="stylesheet" />
<!-- styles for this example page only -->
<style type="text/css">
body { font-size:62.5%; margin:0; padding:0; }
#menuLog { font-size:1.4em; margin:20px; }
.hidden { position:absolute; top:0; left:-9999px; width:1px; height:1px; overflow:hidden; }
.fg-button { clear:left; margin:0 4px 40px 450px; padding: .4em 1em; text-decoration:none !important; cursor:pointer; position: relative; text-align: center; zoom: 1; }
.fg-button .ui-icon { position: absolute; top: 50%; margin-top: -8px; left: 50%; margin-left: -8px; }
a.fg-button { float:left; }
button.fg-button { width:auto; overflow:visible; } /* removes extra button width in IE */
.fg-button-icon-left { padding-left: 2.1em; }
.fg-button-icon-right { padding-right: 2.1em; }
.fg-button-icon-left .ui-icon { right: auto; left: .2em; margin-left: 0; }
.fg-button-icon-right .ui-icon { left: auto; right: .2em; margin-left: 0; }
.fg-button-icon-solo { display:block; width:8px; text-indent: -9999px; }     /* solo icon buttons must have block properties for the text-indent to work */
.fg-button.ui-state-loading .ui-icon { background: url(spinner_bar.gif) no-repeat 0 0; }
</style>
<!-- style exceptions for IE 6 -->
<!--[if IE 6]>
    <style type="text/css">
        .fg-menu-ipod .fg-menu li { width: 95%; }
        .fg-menu-ipod .ui-widget-content { border:0; }
    </style>
    <![endif]-->
<script type="text/javascript">   
    $(function(){
        // BUTTONS
        $('.fg-button').hover(
            function(){ $(this).removeClass('ui-state-default').addClass('ui-state-focus'); },
            function(){ $(this).removeClass('ui-state-focus').addClass('ui-state-default'); }
        );
        // MENUS       
        $('#flat').menu({
            content: $('#flat').next().html(), // grab content from this page
            showSpeed: 400
        });
        $('#hierarchy').menu({
            content: $('#hierarchy').next().html(),
            crumbDefaultText: ' '
        });
        $('#hierarchybreadcrumb').menu({
            content: $('#hierarchybreadcrumb').next().html(),
            backLink: false
        });
        // or from an external source
        $.get('menuContent.html', function(data){ // grab content from another page
            $('#flyout').menu({ content: data, flyOut: true });
        });
    });
    </script>
<!-- theme switcher button -->
<script type="text/javascript" src="js/themeswitchertool"></script>
<script type="text/javascript"> $(function(){ $('<div style="position: absolute; top: 20px; right: 300px;" />').appendTo('body').themeswitcher(); }); </script>
</head>
<body>
<p id="menuLog">You chose: <span id="menuSelection"></span></p>
<a tabindex="0" href="#search-engines" class="fg-button fg-button-icon-right ui-widget ui-state-default ui-corner-all" id="flat"><span class="ui-icon ui-icon-triangle-1-s"></span>flat menu</a>
<div id="search-engines" class="hidden">
  <ul>
    <li><a href="#">Google</a></li>
    <li><a href="#">Yahoo</a></li>
    <li><a href="#">MSN</a></li>
    <li><a href="#">Ask</a></li>
    <li><a href="#">AOL</a></li>
  </ul>
</div>
<a tabindex="0" href="menuContent.html" class="fg-button fg-button-icon-right ui-widget ui-state-default ui-corner-all" id="flyout"><span class="ui-icon ui-icon-triangle-1-s"></span>flyout menu</a> <a tabindex="0" href="#news-items" class="fg-button fg-button-icon-right ui-widget ui-state-default ui-corner-all" id="hierarchy"><span class="ui-icon ui-icon-triangle-1-s"></span>ipod-style menu</a>
<div id="news-items" class="hidden">
  <ul>
    <li><a href="#">Breaking News</a>
      <ul>
        <li><a href="#">Entertainment</a></li>
        <li><a href="#">Politics</a></li>
        <li><a href="#">A&E</a></li>
        <li><a href="#">Sports</a>
          <ul>
            <li><a href="#">Baseball</a></li>
            <li><a href="#">Basketball</a></li>
            <li><a href="#">A really long label would wrap nicely as you can see</a></li>
            <li><a href="#">Swimming</a>
              <ul>
                <li><a href="#">High School</a></li>
                <li><a href="#">College</a></li>
                <li><a href="#">Professional</a>
                  <ul>
                    <li><a href="#">Mens Swimming</a>
                      <ul>
                        <li><a href="#">News</a></li>
                        <li><a href="#">Events</a></li>
                        <li><a href="#">Awards</a></li>
                        <li><a href="#">Schedule</a></li>
                        <li><a href="#">Team Members</a></li>
                        <li><a href="#">Fan Site</a></li>
                      </ul>
                    </li>
                    <li><a href="#">Womens Swimming</a>
                      <ul>
                        <li><a href="#">News</a></li>
                        <li><a href="#">Events</a></li>
                        <li><a href="#">Awards</a></li>
                        <li><a href="#">Schedule</a></li>
                        <li><a href="#">Team Members</a></li>
                        <li><a href="#">Fan Site</a></li>
                      </ul>
                    </li>
                  </ul>
                </li>
                <li><a href="#">Adult Recreational</a></li>
                <li><a href="#">Youth Recreational</a></li>
                <li><a href="#">Senior Recreational</a></li>
              </ul>
            </li>
            <li><a href="#">Tennis</a></li>
            <li><a href="#">Ice Skating</a></li>
            <li><a href="#">Javascript Programming</a></li>
            <li><a href="#">Running</a></li>
            <li><a href="#">Walking</a></li>
          </ul>
        </li>
        <li><a href="#">Local</a></li>
        <li><a href="#">Health</a></li>
      </ul>
    </li>
    <li><a href="#">Entertainment</a>
      <ul>
        <li><a href="#">Celebrity news</a></li>
        <li><a href="#">Gossip</a></li>
        <li><a href="#">Movies</a></li>
        <li><a href="#">Music</a>
          <ul>
            <li><a href="#">Alternative</a></li>
            <li><a href="#">Country</a></li>
            <li><a href="#">Dance</a></li>
            <li><a href="#">Electronica</a></li>
            <li><a href="#">Metal</a></li>
            <li><a href="#">Pop</a></li>
            <li><a href="#">Rock</a>
              <ul>
                <li><a href="#">Bands</a>
                  <ul>
                    <li><a href="#">Dokken</a></li>
                  </ul>
                </li>
                <li><a href="#">Fan Clubs</a></li>
                <li><a href="#">Songs</a></li>
              </ul>
            </li>
          </ul>
        </li>
        <li><a href="#">Slide shows</a></li>
        <li><a href="#">Red carpet</a></li>
      </ul>
    </li>
    <li><a href="#">Finance</a>
      <ul>
        <li><a href="#">Personal</a>
          <ul>
            <li><a href="#">Loans</a></li>
            <li><a href="#">Savings</a></li>
            <li><a href="#">Mortgage</a></li>
            <li><a href="#">Debt</a></li>
          </ul>
        </li>
        <li><a href="#">Business</a></li>
      </ul>
    </li>
    <li><a href="#">Food & Cooking</a>
      <ul>
        <li><a href="#">Breakfast</a></li>
        <li><a href="#">Lunch</a></li>
        <li><a href="#">Dinner</a></li>
        <li><a href="#">Dessert</a>
          <ul>
            <li><a href="#">Dump Cake</a></li>
            <li><a href="#">Doritos</a></li>
            <li><a href="#">Both please.</a></li>
          </ul>
        </li>
      </ul>
    </li>
    <li><a href="#">Lifestyle</a></li>
    <li><a href="#">News</a></li>
    <li><a href="#">Politics</a></li>
    <li><a href="#">Sports</a>
      <ul>
        <li><a href="#">Baseball</a></li>
        <li><a href="#">Basketball</a></li>
        <li><a href="#">Swimming</a>
          <ul>
            <li><a href="#">High School</a></li>
            <li><a href="#">College</a></li>
            <li><a href="#">Professional</a>
              <ul>
                <li><a href="#">Mens Swimming</a>
                  <ul>
                    <li><a href="#">News</a></li>
                    <li><a href="#">Events</a></li>
                    <li><a href="#">Awards</a></li>
                    <li><a href="#">Schedule</a></li>
                    <li><a href="#">Team Members</a></li>
                    <li><a href="#">Fan Site</a></li>
                  </ul>
                </li>
                <li><a href="#">Womens Swimming</a>
                  <ul>
                    <li><a href="#">News</a></li>
                    <li><a href="#">Events</a></li>
                    <li><a href="#">Awards</a></li>
                    <li><a href="#">Schedule</a></li>
                    <li><a href="#">Team Members</a></li>
                    <li><a href="#">Fan Site</a></li>
                  </ul>
                </li>
              </ul>
            </li>
            <li><a href="#">Adult Recreational</a></li>
            <li><a href="#">Youth Recreational</a></li>
            <li><a href="#">Senior Recreational</a></li>
          </ul>
        </li>
        <li><a href="#">Tennis</a></li>
        <li><a href="#">Ice Skating</a></li>
        <li><a href="#">Javascript Programming</a></li>
        <li><a href="#">Running</a></li>
        <li><a href="#">Walking</a></li>
      </ul>
    </li>
  </ul>
</div>
<a tabindex="0" href="#news-items-2" class="fg-button fg-button-icon-right ui-widget ui-state-default ui-corner-all" id="hierarchybreadcrumb"><span class="ui-icon ui-icon-triangle-1-s"></span>ipod-style menu w/ breadcrumb</a>
<div id="news-items-2" class="hidden">
  <ul>
    <li><a href="#">Breaking News</a>
      <ul>
        <li><a href="#">Entertainment</a></li>
        <li><a href="#">Politics</a></li>
        <li><a href="#">A&E</a></li>
        <li><a href="#">Sports</a>
          <ul>
            <li><a href="#">Baseball</a></li>
            <li><a href="#">Basketball</a></li>
            <li><a href="#">A really long label would wrap nicely as you can see</a></li>
            <li><a href="#">Swimming</a>
              <ul>
                <li><a href="#">High School</a></li>
                <li><a href="#">College</a></li>
                <li><a href="#">Professional</a>
                  <ul>
                    <li><a href="#">Mens Swimming</a>
                      <ul>
                        <li><a href="#">News</a></li>
                        <li><a href="#">Events</a></li>
                        <li><a href="#">Awards</a></li>
                        <li><a href="#">Schedule</a></li>
                        <li><a href="#">Team Members</a></li>
                        <li><a href="#">Fan Site</a></li>
                      </ul>
                    </li>
                    <li><a href="#">Womens Swimming</a>
                      <ul>
                        <li><a href="#">News</a></li>
                        <li><a href="#">Events</a></li>
                        <li><a href="#">Awards</a></li>
                        <li><a href="#">Schedule</a></li>
                        <li><a href="#">Team Members</a></li>
                        <li><a href="#">Fan Site</a></li>
                      </ul>
                    </li>
                  </ul>
                </li>
                <li><a href="#">Adult Recreational</a></li>
                <li><a href="#">Youth Recreational</a></li>
                <li><a href="#">Senior Recreational</a></li>
              </ul>
            </li>
            <li><a href="#">Tennis</a></li>
            <li><a href="#">Ice Skating</a></li>
            <li><a href="#">Javascript Programming</a></li>
            <li><a href="#">Running</a></li>
            <li><a href="#">Walking</a></li>
          </ul>
        </li>
        <li><a href="#">Local</a></li>
        <li><a href="#">Health</a></li>
      </ul>
    </li>
    <li><a href="#">Entertainment</a>
      <ul>
        <li><a href="#">Celebrity news</a></li>
        <li><a href="#">Gossip</a></li>
        <li><a href="#">Movies</a></li>
        <li><a href="#">Music</a>
          <ul>
            <li><a href="#">Alternative</a></li>
            <li><a href="#">Country</a></li>
            <li><a href="#">Dance</a></li>
            <li><a href="#">Electronica</a></li>
            <li><a href="#">Metal</a></li>
            <li><a href="#">Pop</a></li>
            <li><a href="#">Rock</a>
              <ul>
                <li><a href="#">Bands</a>
                  <ul>
                    <li><a href="#">Dokken</a></li>
                  </ul>
                </li>
                <li><a href="#">Fan Clubs</a></li>
                <li><a href="#">Songs</a></li>
              </ul>
            </li>
          </ul>
        </li>
        <li><a href="#">Slide shows</a></li>
        <li><a href="#">Red carpet</a></li>
      </ul>
    </li>
    <li><a href="#">Finance</a>
      <ul>
        <li><a href="#">Personal</a>
          <ul>
            <li><a href="#">Loans</a></li>
            <li><a href="#">Savings</a></li>
            <li><a href="#">Mortgage</a></li>
            <li><a href="#">Debt</a></li>
          </ul>
        </li>
        <li><a href="#">Business</a></li>
      </ul>
    </li>
    <li><a href="#">Food & Cooking</a>
      <ul>
        <li><a href="#">Breakfast</a></li>
        <li><a href="#">Lunch</a></li>
        <li><a href="#">Dinner</a></li>
        <li><a href="#">Dessert</a>
          <ul>
            <li><a href="#">Dump Cake</a></li>
            <li><a href="#">Doritos</a></li>
            <li><a href="#">Both please.</a></li>
          </ul>
        </li>
      </ul>
    </li>
    <li><a href="#">Lifestyle</a></li>
    <li><a href="#">News</a></li>
    <li><a href="#">Politics</a></li>
    <li><a href="#">Sports</a>
      <ul>
        <li><a href="#">Baseball</a></li>
        <li><a href="#">Basketball</a></li>
        <li><a href="#">Swimming</a>
          <ul>
            <li><a href="#">High School</a></li>
            <li><a href="#">College</a></li>
            <li><a href="#">Professional</a>
              <ul>
                <li><a href="#">Mens Swimming</a>
                  <ul>
                    <li><a href="#">News</a></li>
                    <li><a href="#">Events</a></li>
                    <li><a href="#">Awards</a></li>
                    <li><a href="#">Schedule</a></li>
                    <li><a href="#">Team Members</a></li>
                    <li><a href="#">Fan Site</a></li>
                  </ul>
                </li>
                <li><a href="#">Womens Swimming</a>
                  <ul>
                    <li><a href="#">News</a></li>
                    <li><a href="#">Events</a></li>
                    <li><a href="#">Awards</a></li>
                    <li><a href="#">Schedule</a></li>
                    <li><a href="#">Team Members</a></li>
                    <li><a href="#">Fan Site</a></li>
                  </ul>
                </li>
              </ul>
            </li>
            <li><a href="#">Adult Recreational</a></li>
            <li><a href="#">Youth Recreational</a></li>
            <li><a href="#">Senior Recreational</a></li>
          </ul>
        </li>
        <li><a href="#">Tennis</a></li>
        <li><a href="#">Ice Skating</a></li>
        <li><a href="#">Javascript Programming</a></li>
        <li><a href="#">Running</a></li>
        <li><a href="#">Walking</a></li>
      </ul>
    </li>
  </ul>
</div>
</body>
</html>

以上就是本文所述的全部内容了，希望对大家学习jQuery能够有所帮助。