Heim >Web-Frontend >js-Tutorial >jquery imitiert den schwebenden Navigationseffekt am Ende von Baidu Encyclopedia_jquery
jquery ähnelt der unteren Navigationsvorschau der Baidu-Enzyklopädie. Der Code ist sehr einfach, daher wird es hier nicht viel Unsinn geben.
Rendering:
CSS
* { margin: 0; padding: 0 } .wrap { width: 1000px; overflow: hidden; margin: 0 auto; } .content { width: 780px; float: left; } .slide { width: 200px; float: right; }
HTML
<div class="wrap"> <div class="content"> <h2 class="headline-1"> <a class="anchor-1" name="1"></a> <span class="headline-1-index">1</span> <span class="headline-content">part1</span> </h2> <div class="para"> content1,content1 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="2"></a> <span class="headline-2-index">2</span> <span class="headline-content">part2</span> </h2> <div class="para"> content2,content2 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-2"> <a class="anchor-2" name="2-1"></a> <!--<span class="headline-2-index">2-1</span>--> <span class="headline-content">part2-1</span> </h2> <div class="para"> content2-1,content2-1 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-2"> <a class="anchor-2" name="2-2"></a> <!--<span class="headline-1-index">2-2</span>--> <span class="headline-content">part2-2</span> </h2> <div class="para"> content2-2,content2-2 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="3"></a> <span class="headline-1-index">3</span> <span class="headline-content">part3</span> </h2> <div class="para3"> content,content <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="4"></a> <span class="headline-1-index">4</span> <span class="headline-content">part4</span> </h2> <div class="para4"> content,content <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="5"></a> <span class="headline-1-index">5</span> <span class="headline-content">part5</span> </h2> <div class="para"> content5,content5 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="6"></a> <span class="headline-1-index">6</span> <span class="headline-content">part6</span> </h2> <div class="para"> content6,content6 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="7"></a> <span class="headline-1-index">7</span> <span class="headline-content">part7</span> </h2> <div class="para"> content7,content7 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="8"></a> <span class="headline-1-index">8</span> <span class="headline-content">part8</span> </h2> <div class="para"> content8,content8 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="9"></a> <span class="headline-1-index">9</span> <span class="headline-content">part9</span> </h2> <div class="para"> content9,content9 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="10"></a> <span class="headline-1-index">10</span> <span class="headline-content">part10</span> </h2> <div class="para"> content10,content10 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="11"></a> <span class="headline-1-index">11</span> <span class="headline-content">part11</span> </h2> <div class="para"> content11,content11 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="12"></a> <span class="headline-1-index">12</span> <span class="headline-content">part12</span> </h2> <div class="para"> content12,content12 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="13"></a> <span class="headline-1-index">13</span> <span class="headline-content">part13</span> </h2> <div class="para"> content13,content13 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="14"></a> <span class="headline-1-index">14</span> <span class="headline-content">part14</span> </h2> <div class="para"> content14,content14 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> </div> <h2 class="headline-1"> <a class="anchor-1" name="15"></a> <span class="headline-1-index">15</span> <span class="headline-content">part15</span> </h2> <div class="para"> content15,content15 <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> bottom </div> </div> <div class="slide" > <div id="sideToolbar" style="position: fixed; bottom: 0"> <div id="sideCatalog" class="sideCatalogBg" style="visibility: visible;"> <div id="sideCatalog-sidebar"> <div class="sideCatalog-sidebar-top"></div> <div class="sideCatalog-sidebar-bottom"></div> </div> <div id="sideCatalog-updown" style="visibility: visible;"> <div id="sideCatalog-up" class="sideCatalog-up-disable" title="向上翻页"></div> <div id="sideCatalog-down" class="sideCatalog-down-enable" title="向下翻页"></div> </div> <div id="sideCatalog-catalog"> <dl style="width:175px;zoom:1"> <!-- <dd id="sideToolbar-item-0-1" class="sideCatalog-item2 heightlight"> <span class="sideCatalog-index1">1</span> <a class="nslog:1026" onclick="return false;" title="part1" href="#1">part1</a> <span class="sideCatalog-dot"></span> </dd> <dd id="sideToolbar-item-0-2" class="sideCatalog-item1"> <span class="sideCatalog-index1">2</span> <a class="nslog:1026" onclick="return false;" title="part2" href="#2">part2</a> <span class="sideCatalog-dot"></span> </dd> <dd id="sideToolbar-item-0-2-1" class="sideCatalog-item2"> <span class="sideCatalog-index1">2-1</span> <a class="nslog:1026" onclick="return false;" title="part2" href="#2-1">part2-1</a> <span class="sideCatalog-dot"></span> </dd> --> </dl> </div> </div> <a id="sideCatalogBtn" class="" style="visibility: visible;" href="javascript:void(0);"></a> <a id="sideToolbar-up" style="visibility: visible;" title="返回顶部" href="javascript:void(0)"></a> </div> </div> </div>
JS
<script> var allEle = $(':header[class*="headline"]'); var headLen = allEle.length; var ddArr = []; //根据页面内容生成slide导航; allEle.each(function(i){ var sideIndex, sideName, ddId, highlight='', ddClass, sideAnchor; sideName = $(this).find('.headline-content').text(); if($(this).hasClass('headline-1')){ sideAnchor = sideIndex = $(this).find('.anchor-1').eq(0).attr('name'); ddClass = 'sideCatalog-item1'; }else{ sideAnchor = $(this).find('.anchor-2').eq(0).attr('name'); sideIndex = sideAnchor.replace('-','.'); ddClass = 'sideCatalog-item2'; } ddId = 'sideToolbar-item-0-'+ sideAnchor; if(i==0){ highlight = 'highlight'; } var ddHtml = '<dd id="'+ ddId +'" class="'+ddClass + ' ' + highlight +'">' + '<span class="sideCatalog-index1">'+ sideIndex +'</span>' + '<a class="nslog:1026" onclick="return false;" title="part'+sideAnchor+'" href="#'+sideAnchor+'">'+ sideName +'</a>' + '<span class="sideCatalog-dot"></span>' + '</dd>'; ddArr.push(ddHtml); }); $('#sideCatalog-catalog dl').html(ddArr.join('')); //设置导航的位置 var slideTop = $(window).height() - $('.slide').height(); $('.slide').css('top',slideTop); var slideInnerHeight = $('#sideCatalog-catalog dl').height(); var slideOutHeight = $('#sideCatalog-catalog').height(); var enableTop = slideInnerHeight - slideOutHeight; var step = 50; //点击向上的按钮 $('#sideCatalog-down').bind('click', function () { if ($(this).hasClass('sideCatalog-down-enable')) { if ((enableTop - Math.abs(parseInt($('#sideCatalog-catalog dl').css('top')))) > step) { $('#sideCatalog-catalog dl').stop().animate({'top': '-=' + step}, 'fast'); $('#sideCatalog-up').removeClass('sideCatalog-up-disable').addClass('sideCatalog-up-enable'); } else { $('#sideCatalog-catalog dl').stop().animate({'top': -enableTop}, 'fast'); $(this).removeClass('sideCatalog-down-enable').addClass('sideCatalog-down-disable'); } } else { return false; } }) //点击向下的按钮 $('#sideCatalog-up').bind('click', function () { if ($(this).hasClass('sideCatalog-up-enable')) { if (Math.abs(parseInt($('#sideCatalog-catalog dl').css('top'))) > step) { $('#sideCatalog-catalog dl').stop().animate({'top': '+=' + step}, 'fast'); $('#sideCatalog-down').removeClass('sideCatalog-down-disable').addClass('sideCatalog-down-enable'); } else { $('#sideCatalog-catalog dl').stop().animate({'top': '0'}, 'fast'); $(this).removeClass('sideCatalog-up-enable').addClass('sideCatalog-up-disable'); } } else { return false; } }) //点击导航中的各个目录 $('#sideCatalog-catalog dl').delegate('dd', 'click', function () { var index = $('#sideCatalog-catalog dl dd').index($(this)); scrollSlide($(this), index); var ddIndex = $(this).find('a').stop().attr('href').lastIndexOf('#'); var ddId = $(this).find('a').stop().attr('href').substring(ddIndex+1); var windowTop = $('a[name="' + ddId + '"]').offset().top; $('body,html').animate({scrollTop: windowTop}, 'fast'); }) //滚动页面,即滚动条滚动 $(window).scroll(function () { if($(this).scrollTop()>$(this).height()){ $('.slide').show(); }else{ $('.slide').hide(); } for (var i=headLen-1; i>=0; i--) { if ($(this).scrollTop() >=allEle.eq(i).offset().top - allEle.eq(i).height()) { var index = i; $('#sideCatalog-catalog dl dd').eq(index).addClass('highlight').siblings('dd').removeClass('highlight'); scrollSlide($('#sideCatalog-catalog dl dd').eq(index), index); return false; } else { $('#sideCatalog-catalog dl dd').eq(0).addClass('highlight').siblings('dd').removeClass('highlight'); } } }) //导航的滚动,以及向上,向下按钮的显示隐藏 function scrollSlide(that, index){ if (index < 5) { $('#sideCatalog-catalog dl').stop().animate({'top': '0'}, 'fast'); $('#sideCatalog-down').removeClass('sideCatalog-down-disable').addClass('sideCatalog-down-enable'); $('#sideCatalog-up').removeClass('sideCatalog-up-enable').addClass('sideCatalog-up-disable'); } else if (index > 11) { $('#sideCatalog-catalog dl').stop().animate({'top': -enableTop}, 'fast'); $('#sideCatalog-down').removeClass('sideCatalog-down-enable').addClass('sideCatalog-down-disable'); $('#sideCatalog-up').removeClass('sideCatalog-up-disable').addClass('sideCatalog-up-enable'); } else { var dlTop = parseInt($('#sideCatalog-catalog dl').css('top')) + slideOutHeight / 2 - (that.offset().top - $('#sideCatalog-catalog').offset().top); $('#sideCatalog-catalog dl').stop().animate({'top': dlTop}, 'fast'); $('#sideCatalog-down').removeClass('sideCatalog-down-disable').addClass('sideCatalog-down-enable'); $('#sideCatalog-up').removeClass('sideCatalog-up-disable').addClass('sideCatalog-up-enable'); } } //置顶 $('#sideToolbar-up').bind('click', function(){ $('body,html').animate({scrollTop: 0}, 'fast'); }) //slide内容的显示与隐藏 $('#sideCatalogBtn').bind('click', function(){ if($(this).hasClass('sideCatalogBtnDisable')){ $(this).removeClass('sideCatalogBtnDisable'); $('#sideCatalog').css('visibility','visible'); }else{ $(this).addClass('sideCatalogBtnDisable'); $('#sideCatalog').css('visibility','hidden'); } }) </script>