轮播图的实现（自动和手动）

动画实现轮播图的自动播放

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>轮播图练习</title>
    <style>
        @keyframes moves {
            0% {
                left: 0px;
            }

            23% {
                left: 0px;
            }

            33% {
                left: -400px;
            }

            42% {
                left: -400px;
            }

            53% {
                left: -800px;
            }

            67% {
                left: -800px;
            }

            80% {
                left: -1200px;
            }

            90% {
                left: -1200px;
            }

            100% {
                left: -1600px;
            }
        }

        .window {
            position: relative;
            width: 400px;
            height: 200px;
            overflow: hidden;
            margin: 0 auto;
        }

        .move {
            position: absolute;
            top: 0;
            left: 0;
            width: 1600px;
            height: 200px;
            overflow: hidden;
            border: 1px solid #ccc;
            animation: moves 9s linear infinite;
        }

        .move img {
            float: left;
            width: 400px;
            height: 200px;
        }
    </style>
</head>

<body>
    <div class="window">
        <div class="move">
            <img src="images/lunbotu1.jpg" alt="">
            <img src="images/lunbotu2.jpg" alt="">
            <img src="images/touxiang1.jpg" alt="">
            <img src="images/touxiang2.jpg" alt="">
        </div>
    </div>
</body>

</html>

手动点击实现轮播图的切换

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>轮播图练习</title>
    <style>
        .window {
            position: relative;
            width: 800px;
            height: 200px;
            overflow: hidden;
            margin: 0 auto;
        }

        .move {
            position: absolute;
            top: 0;
            left: 0;
            width: 3200px;
            height: 200px;
        }

        .move img {
            float: left;
            width: 400px;
            height: 200px;
        }

        .lBox {
            position: absolute;
            top: 40%;
            left: 10px;
            width: 50px;
            height: 50px;
            border: 4px solid pink;
            border-top: none;
            border-right: none;
            transform: rotate(45deg);
        }

        .rBox {
            display: none;
            position: absolute;
            top: 40%;
            right: 10px;
            width: 50px;
            height: 50px;
            border: 4px solid pink;
            border-left: none;
            border-bottom: none;
            transform: rotate(45deg);
        }
    </style>
</head>

<body>
    <div class="window">
        <div class="move">
            <img src="images/lunbotu1.jpg" alt="">
            <img src="images/lunbotu2.jpg" alt="">
            <img src="images/touxiang1.jpg" alt="">
            <img src="images/touxiang2.jpg" alt="">
            <img src="images/lunbotu1.jpg" alt="">
            <img src="images/lunbotu2.jpg" alt="">
            <img src="images/touxiang1.jpg" alt="">
            <img src="images/touxiang2.jpg" alt="">
        </div>
        <div class="lBox"></div>
        <div class="rBox"></div>
    </div>
    <script>
        //flag用于判断是否已到照片的最后一张
        var flag = 0;
        var lBox = document.querySelector(".lBox");
        var rBox = document.querySelector(".rBox");
        var move = document.querySelector(".move");
        var img = document.querySelectorAll("img");
        console.log(img.length);
        var length;
        //一张轮播图里显示的图的个数
        var num = 2;
        if (img.length % num == 0)
            length = img.length / num;
        else
            length = img.length / num + 1;
        lBox.addEventListener("click", function (e) {
            flag++;
            move.style.left = -800 * flag + 'px';
            if (flag == length - 1) {
                lBox.style.display = 'none';
                rBox.style.display = 'block';
            }
        });
        rBox.addEventListener("click", function (e) {
            flag--;
            move.style.left = -800 * flag + 'px';
            if (flag == 0) {
                lBox.style.display = 'block';
                rBox.style.display = 'none';
            }
        });
    </script>
</body>

</html>

 

posted @ 2020-11-24 20:09  echobbd  阅读(816)  评论(1)  编辑  收藏  举报