闭包手动轮播图

最新推荐文章于 2020-12-21 09:58:49 发布

不一样的咸鱼

最新推荐文章于 2020-12-21 09:58:49 发布

阅读量234

点赞数

本文链接：https://blog.youkuaiyun.com/xianyu156/article/details/100568470

版权

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }
        .show{
            width: 500px;
            height: 300px;
            border: 1px solid red;
            position: relative;
        }
        span{
            width: 15px;
            height: 25px;
            display: inline-block;
            background-color: rgba(0, 0, 0, 0.5);
            color: #fff;
        }
        .pre{
            position: absolute;
            left:0;
            top: 135px;
        }
        .next{
            position: absolute;
            right: 0;
            top: 135px;
        }
        .show img{
            width: 500px;
            height: 300px;
            display: none;
        }
    </style>
</head>
<body>
    <div class="show">
        <img src="./img/1.jpeg" alt="">
        <img src="./img/2.gif" alt="">
        <img src="./img/3.jpg" alt="">
        <img src="./img/4.jpg" alt="">
        <span class="pre"> &lt;</span>
        <span class="next">&gt;</span>
    </div>
    <script>

        // 通过class类名获取document元素数组，通过数组获取dom对象
        var pre = document.getElementsByClassName('pre')[0]
        var next = document.getElementsByClassName('next')[0]
        // 通过标签名字获取dom元素【数组】
        var imgs = document.getElementsByTagName('img')
        function swiper(){
            var index = 0;
            imgs[0].style.display = 'block'
            next.onclick = function(){
                imgs[index].style.display = 'none'
                ++index
                if(index >3){
                    index = 0;
                }
                imgs[index].style.display = 'block'
            }
            pre.onclick = function(){
                imgs[index].style.display = 'none'
                --index
                if(index < 0){
                    index = 3 ;
                }
                imgs[index].style.display = 'block'
            }
        }
        swiper()
    </script>
</body>
</html>

以上的轮播图仅供参考