1、新建html
2、书写html。争犸禀淫<div class="content_left"><div class="title"><稆糨孝汶;span>百度经验</span></div><div class="left_nav"> <ul> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt"> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> <li style="display: list-item;"> <div class="t"><i></i><a href="#">百度经验</a></div> <div class="txt" style=""> <p><a href="#">百度经验</a></p> <p><a href="#">百度经验</a></p> </div> </li> </ul> <div class="more hover"><span>收起</span></div></div></div><div class="explain_txt"><p>1.此导航个数超过6个会自动隐藏超出部分，并出现“展开”按钮</p><p>2.点击文字可跳转链接，点击小箭头可打开二级菜单</p><p>3.点击超过第6个之后的小箭头展开二级菜单后，点击 “收起” 按钮，其二级菜单全部收起（前6个还是当前状态）</p></div>
3、书写css样式。<style>html{background:none repeat scroll 0 0 #FFFFFF; overflow-y:scroll}body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, fieldset, lengend, button, input, textarea, form, th, td{margin:0; padding:0}body, button, input, select, textarea{font:14px/1.8 "Microsoft Yahei", verdana}.ie10 body,.ie11 body{font:14px/1.8 "Microsoft Yahei", verdana}h1, h2, h3, h4, h5, h6{font-size:100%; font-weight:normal}button, input, select, textarea{font-size:100%}hr{border:0; height:1px; *color:#fff}address, cite, dfn, em, var{font-style:normal}small{font-size:12px}.fl-clear{clear:both}.fl-clr{zoom:1}.fl-clr:after{display:block; clear:both; height:0; content:"\0020"}table{border-collapse:collapse; border-spacing:0}ul, ol{list-style:none outside none}a{text-decoration:none; color:#696969}a:hover{text-decoration:none; color:#ff6637}img{border:0}.nav_title{text-align:center; padding:50px 0; font-size:16px;}.nav_title a{margin:0 20px; display:inline-block; border:1px solid #ccc; height:40px; line-height:40px; padding:0 20px;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px; overflow:hidden}.nav_title .a{color:#fff; background:#ff6637;border:1px solid #ff6637;}.content_left{width:240px; margin:50px auto}.content_left .title{height:45px; background:#ff6637; color:#fff; padding:0 20px; line-height:45px; font-size:16px}.content_left .title span{background:url(img/ioc.png) no-repeat 0 center; padding-left:22px;}.left_nav{border:1px solid #e6e6e6; border-top:0; overflow:hidden; padding:0 0 20px 0}.left_nav ul{margin-top:-1px;}.left_nav li{padding:0 20px; border-top:1px dashed #e7e7e7}.left_nav li .t{height:50px; line-height:50px; padding:0 0 0 18px; position:relative}.left_nav li .t i{position:absolute; left:0; top:0; width:18px; height:50px;background:url(img/ioc_l.png) no-repeat 0 center; cursor:pointer}.left_nav li .t a,.left_nav li .t.hover:hover a{color:#000}.left_nav li .t:hover i{background:url(img/ioc_la.png) no-repeat 0 center;}.left_nav li .t:hover a{color:#ff5825}.left_nav li .t.hover i{background:url(img/ioc_b.png) no-repeat 0 center; }.left_nav li .txt{padding:0 0 20px 18px; display:none}.left_nav li .txt p{line-height:30px; height:30px; overflow:hidden}.left_nav .more{background:#ff6637; display:block; width:120px; height:30px; margin:0 auto; text-align:center; line-height:30px; color:#fff; cursor:pointer;border-radius:50px;-moz-border-radius:50px;-webkit-border-radius:50px; overflow:hidden}.left_nav .more:hover{background:#ff5825}.left_nav .more span{padding-right:18px; background:url(img/ioc_ba.png) no-repeat right center;}.left_nav .more.hover span{background:url(img/ioc_t.png) no-repeat right center;}.explain_txt{width:860px; margin:0 auto; line-height:40px; padding:0 0 200px 0; font-size:16px}</style>
4、添加引用js。<script charset="utf-8" type="text/javascript" src="jquery.js"></script>
5、书写单独js。<script>$(".left_nav li .t i").click(function(){ $(this).parent(".t").toggleClass("hover"); $(this).parent(".t").next(".txt").slideToggle()})var sl=$(".left_nav li").length;if(sl>6){ $(".left_nav li").each(function(index){ if(index>5){ $(this).hide(0) } }) $(".left_nav .more").show()}else{ $(".left_nav .more").hide()}function opene(){ $(".left_nav li").each(function(index){ if(index>5){ $(this).slideToggle(300); $(this).find(".t").removeClass("hover"); $(this).find(".txt").slideUp(); } })}$(".left_nav .more").click(function() { opene(); $(this).toggleClass("hover"); var text=$(this).find("span").text(); if(text=="灞曞紑"){ $(this).find("span").text("鏀惰捣"); }else if(text=="鏀惰捣"){ $(this).find("span").text("灞曞紑"); }});if($("div").hasClass("owl-carousel")){ $('#scroll').owlCarousel({ items:4, autoPlay:false, navigation:true, navigationText: ["",""], scrollPerPage:false });}$(".details_box ul li .more").hover(function(){ $(this).next(".txt").fadeIn()},function(){ $(this).next(".txt").fadeOut()});</script>
6、查看效果。
