一组图片实现无缝轮播的代码教程

18-06-12 来源：[db:作者]

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一组图片实现无缝轮播的代码教程

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        *{margin:0;padding:0;}
        ul{list-style:none;}
        img {vertical-align: top; }  /*取消图片底部3像素距离*/
        .box {
            width: 600px;
            height: 200px;
            margin: 100px auto;
            background-color: pink;
            position: relative;
            overflow: hidden;
        }
        .box ul li {
            float: left;
        }
        .box ul {
            width: 400%;
            position: absolute;
            left: 0;
            top: 0;
        }
    </style>
</head>
<body>
<div class="box" id="scroll">
    <ul>
        <li><img src="images/01.jpg" alt=""/></li>
        <li><img src="images/02.jpg" alt=""/></li>
        <li><img src="images/03.jpg" alt=""/></li>
        <li><img src="images/04.jpg" alt=""/></li>
        <li><img src="images/01.jpg" alt=""/></li>
        <li><img src="images/02.jpg" alt=""/></li>
    </ul>
</div>
</body>
</html>
<script>
    var scroll = document.getElementById("scroll");
    var ul = scroll.children[0];
    var num = 0; //控制左侧值  left
    var timer = null;  // 定时器
    var leader = 0,target = 0;
    timer = setInterval(autoPlay,1);
    function autoPlay() {
        target --;
//        num--;
        //console.log(num);
        target<=-1200 ? target = 0 : target;
        leader = leader + (target - leader) / 10;
        ul.style.left = leader + "px";
    }
    scroll.onmouseover = function() {  // 鼠标经过大盒子  停止定时器
        clearInterval(timer);
    }
    scroll.onmouseout = function() {
        timer = setInterval(autoPlay,20);  // 开启定时器
    }

</script>

这里写图片描述

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