jQuery 简单漂亮的导航菜单_html/css_WEB-ITnose
鼠标悬浮时菜单项向上移动成蓝底白字,点击之后底部会有蓝条表示当前选中项。
页面代码,菜单的每一项都是一个 div ,其中包括一个 ul 用来放置显示文字等,另一个 div 则是底部的蓝条,需要给第一项和最后一项设置不同的 class ,样式需要用到:
<div id="nav"> <div class="navItem indexNavItem"> <ul class="navUl"> <li>首页</li> <li class="hoverLi">首页</li> </ul> <div class="highlighter selectedNav"></div> </div> <div class="navItem"> <ul class="navUl"> <li>A</li> <li class="hoverLi">A</li> </ul> <div class="highlighter"></div> </div> <div class="navItem lastNavItem"> <ul class="navUl"> <li>A</li> <li class="hoverLi">A</li> </ul> <div class="highlighter"></div> </div> <div id="logoutNavItem" class="navItem logoutNavItem lastNavItem"> <ul class="navUl"> <li>退出</li> <li class="hoverLi">退出</li> </ul> <div class="highlighter"></div> </div></div>
样式,主要就是每个菜单项的左右边框的设置以及 ul 和 li 的位置设置:
*{ padding: 0; margin: 0;}body{ background-color: #fffff3; font: 12px/1.6em Helvetica, Arial, sans-serif;}ul,li{ list-style: none;}#nav{ text-align: center; height: 50px; font-size: 10px; line-height: 30px; background-color: #F0E6DB; margin-bottom: 10px;}.navItem{ cursor: pointer; position: relative; float: left; width: 100px; height: 50px; font-size: 15px; border-right: 2px solid rgb(255,255,255); border-left: 2px solid rgb(255,255,255); overflow: hidden; font-weight:bold;}.indexNavItem{ border-left: 4px solid rgb(255,255,255); margin-left: 10px;}.lastNavItem{ border-right: 4px solid rgb(255,255,255);}.logoutNavItem{ float: right; width: 120px; margin-right: 10px; border-left: 4px solid rgb(255,255,255);}.navUl{ position: relative; height: 100px; width: 100%; border-bottom: 5px solid rgb(2,159,212);}.navUl li{ height: 50px; line-height: 50px;}.highlighter{ position: absolute; bottom: 0; height: 5px; width: 100%;}.selectedNav{ background-color: #029FD4;}.hoverLi{ background-color: #029FD4; color: #ffffff;}
接下来就是给菜单编写悬浮和单击事件的 js 代码了,悬浮时将 ul 上移 li 的高度,鼠标移开后再恢复,点击之后就是给蓝条的 div 添加样式即可:
$(function() { $(".navItem").hover(function() { $(this).children("ul").animate({ top: "-50px" }, 100); }, function() { $(this).children("ul").animate({ top: "0px" }, 100); }); $(".navItem").click(function(event) { $(this).siblings().children('.highlighter').removeClass('selectedNav'); $(this).children('.highlighter').addClass('selectedNav'); });})

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