插件轮播

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/bxslider/4.2.12/jquery.bxslider.css">

</head>
<body>
    <ul class="bxslider">
        <li><img src="1.jpg"/></li>
        <li><img src="2.jpg"/></li>
        <li><img src="3.jpg"/></li>
        <li><img src="4.jpg"/></li>

    </ul>

    <script src="jquery.js"></script>
    <script src="https://cdn.jsdelivr.net/bxslider/4.2.12/jquery.bxslider.min.js"></script>
    <script>
        $(document).ready(function () {
            $('.bxslider').bxSlider();
        });
    </script>
</body>
</html>
引用bxSlider地址：https://bxslider.com/install/