javascript无缝滚动原理

javascript无缝滚动原理-LMLPHP

相比之下，无缝拼接能避免切换时出现空白，使用户体验更好！

无缝滚动原理：

制作一个双胞胎，内容跟主体内容一致，样式一致，如果横向排列则并排，当切换的时候，就可以弥补主体空白的地方，其他按普通循环操作即可。

源码：

<!DOCTYPE html>

<html lang="zn-ch">

<head>

    <meta charset="UTF-8">

    <title>demo</title>

    <style>

.slide-box{margin:0 auto;width:300px;height:100px;overflow:hidden}

.slide-box-inner{width:600px;height:100px}

.slide-content,.slide-copy{float:left;height:100px}

.slide-content a,.slide-copy a{display:block;width:100px;height:100px;text-align:center;line-height:100px;color:#fff;text-decoration:none;float:left}

.box1{background:#4A88C6}

.box2{background:#EC118E}

.box3{background:#1AA3A9}

    </style>

</head>

<body>

    <div class="slide-box" id="slideBox">

        <div class="slide-box-inner">

            <div class="slide-content" id="slideContent">

                <a href="#" class="box1">No1</a><a href="#" class="box2">No2</a><a href="#" class="box3">No3</a>

            </div>

            <!-- 双胞胎兄弟 -->

            <div class="slide-copy" id="slideCopy">

            </div>

        </div>

    </div>

    <script type="text/javascript" language="javascript">

    //大层

    var slideBox = document.getElementById("slideBox");

    //内容层

    var slideContent = document.getElementById("slideContent");

    //拼接层

    var slideCopy = document.getElementById("slideCopy");

    //循环相隔时间

    var speed = 10;

    //复制内容

    slideCopy.innerHTML = slideContent.innerHTML;

    // *无缝切换函数，滚动值>=可视宽度，归0，否则数值递增

    function seamlessSlide() {

        var seeWidth = slideContent.offsetWidth;

        if (slideBox.scrollLeft >= seeWidth) {

            slideBox.scrollLeft = 0;

        } else {

            slideBox.scrollLeft++;

        }

    }

    //每10毫秒循环执行slide

    var runslide = setInterval(seamlessSlide, speed);

    //鼠标移到大层，循环终止

    slideBox.onmouseover = function() {

            clearInterval(runslide);

        }

        // //鼠标移开时，继续循环

    slideBox.onmouseout = function() {

        setTimeout(function() {

            runslide = setInterval(seamlessSlide, speed);

        }, 300);

    }

    </script>

</body>

</html>