Home Web Front-end HTML Tutorial jQuery 简单漂亮的导航菜单_html/css_WEB-ITnose

jQuery 简单漂亮的导航菜单_html/css_WEB-ITnose

Jun 24, 2016 am 11:33 AM

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>
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  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;}
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  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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