jquery实现导航栏头部点击变换颜色

实现效果如下:

话不多说直接上代码:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        a{
            text-decoration: none;
            color: black;
        }
        #menu{
            width: 100%;
            height: 20px;
            background: gainsboro;
        }
        ul li{
            list-style: none;
            float: left;
            padding-left: 20px;
            background-color: whitesmoke;
        }
        .active {
            color: white;
            background-color: black;
        }

        .none {
            background-color: whitesmoke;
        }
    </style>
</head>
<body>
<ul id="menu">
    <li><a href="#">首页</a></li>
    <li><a href="#">直播</a></li>
    <li><a href="#">新闻</a></li>
    <li><a href="#">关于</a></li>
</ul>
<script src="../JQuery/js/jquery-3.0.0.min.js"></script>
<script>
    $('#menu li a').click(function () {
        var f = this;
        $('#menu li a').each(function () {
            this.className = this == f ? 'active' : 'none'
        });
    });
</script>

</body>
</html>