jQuery弹性滑动导航菜单

<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title>jQuery弹性滑动导航菜单</title>
<style type="text/css">
body{ font-size:100%; font-family:"Microsoft YaHei","Arial"; background:#fff;}
#nav{ position:relative; width:832px; _width:835px; margin:100px auto 0 auto; border-bottom:2px #ddd solid;}
#nav .nav-menu{ height:50px;}
#nav .nav-menu a{ display:block; float:left; height:50px; padding:0 40px; line-height:50px; color:#666; font-size:16px; text-decoration:none;}
#nav .nav-current{ position:absolute; bottom:-2px; height:2px; overflow:hidden; background:#80b600;}
</style>
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(function(){

(function(){
var $navcur = $(".nav-current");
var $nav = $("#nav");
var current = ".current";
var itemW = $nav.find(current).innerWidth();    //默认当前位置宽度
var defLeftW = $nav.find(current).position().left;    //默认当前位置Left值

//添加默认下划线
$navcur.css({width:itemW,left:defLeftW});

//hover事件
$nav.find("a").hover(function(){
    var index = $(this).index();    //获取滑过元素索引值
    var leftW = $(this).position().left;    //获取滑过元素Left值
    var currentW = $nav.find("a").eq(index).innerWidth();    //获取滑过元素Width值
    $navcur.stop().animate({
        left: leftW,
        width: currentW
    },300);
    
},function(){
    $navcur.stop().animate({
        left: defLeftW,
        width: itemW
    },300)
})
})();

});
</script>
</head>
<body>
<div id="nav">
    <div class="nav-menu">
        <a href="#" class="current">首页</a>
        <a href="#">了解我们</a>
        <a href="#">产品展示</a>
        <a href="#">服务报价</a>
        <a href="#">最新消息</a>
        <a href="#">联系方式</a>
    </div>
    <div class="nav-current"></div>
</div>
</body>
</html>
来源：https://www.cnblogs.com/huanlei/archive/2013/04/25/3042114.html
标签
jquery
var
jquery事件
nav