jQuery弹性滑动导航菜单-原创手记-慕课网

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pageEncoding="UTF-8"%>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>实例：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 id="jquery_172" type="text/javascript" class="library" src="js/jquery-1.9.1.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>
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<div class="nav-current"></div>
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</body>
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