<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
padding: 0;
margin: 0;
list-style: none;
}
.box {
width: 100%;
height: 40px;
background: #01204f;
margin-top: 50px;
}
.box ul {
width: 1000px;
height: 40px;
margin: 0 auto;
position: relative;
cursor: pointer;
}
.box li {
float: left;
color: #fff;
padding: 0 10px;
font: bold 14px/40px "Microsoft YaHei";
position: relative; /* 提升层级,不会改变元素特性 */
}
.box .active{
background: #cc0000;
}
.move{
width: 40px;
height: 40px;
background: #cc0000;
position: absolute;
}
</style>
</head>
<body>
<div class="box">
<ul>
<div class="move"></div> <!-- 移动盒子 -->
<li class="active">首页</li>
<li>国内</li>
<li>国际</li>
<li>军事</li>
<li>军事</li>
<li>军事</li>
<li>财经</li>
<li>体育</li>
<li>物联网</li>
<li>科技</li>
<li>有效起床</li>
<li>女人</li>
</ul>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/1.9.1/jquery.js"></script>
<script>
$("li").hover(function(){
//鼠标移入:鼠标到那个li,div就需要运动到那个li
$(".move").stop().animate({"left":$(this).position().left,"width":$(this).innerWidth()});
},function(){
$(".move").stop().animate({"left":$(".active").position().left,"width":40})
});
$("li").click(function(){
$(this).addClass("active").siblings("li").removeClass("active");
})
</script>
</body>
</html>