轮播库-swiper使用案例Swiper使用案例,以及注意事项（记得先请求ajax数据再去渲染界面，否则loop会出现问

Swiper使用案例

记得先请求ajax数据再去渲染界面，否则loop会出现问题。虽然也可以使用observer:true来解决

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="lib/swiper-bundle.min.css">
    <script src="lib/swiper-bundle.min.js"></script>

    <script src="lib/jquery.js"></script>

    <style>
        .kunkun img {
            width: 100%;
        }
    </style>
</head>

<body>

    <div class="swiper kunkun">
        <div class="swiper-wrapper">
            <!-- <div class="swiper-slide">
                <img src=""/>
            </div> -->
        </div>
        <!-- 如果需要分页器 -->
        <div class="swiper-pagination"></div>
    </div>
    <script>
        $.get("http://localhost:3000/banner").then(res => {
            console.log(res)
            render(res)
            initSwiper()
        })

        function render(list) {
            var oslides = list.map(item => `
            <div class="swiper-slide">
                <img src="${item.imgUrl}"/>
            </div>
            `)

            // console.log(oslides.join(""))

            $(".swiper-wrapper").html(oslides.join(""))
        }


        $.extend({
            swiper: function (ele, obj) {
                new Swiper(ele,obj)
            }
        })

        function initSwiper() {
            $.swiper(".kerwin", {
                // direction: 'vertical', // 垂直切换选项
                loop: true, // 循环模式选项
                // 如果需要分页器
                pagination: {
                    el: '.swiper-pagination',
                    clickable: true
                },
                // 保证loop：true生效。如果不设置这个，且先渲染然后发送ajax请求，会loop失效，建议先请求后渲染
                observer: true 
            })
        }
    </script>
</body>

</html>