JS实现文字向上无缝滚动轮播

效果图:

 

全部代码:

<!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>
        *{margin: 0;padding: 0}
        #box{height: 140px; border: solid 1px; overflow: hidden;}
    </style>
</head>

<body>
    <div id="box">
        <ul id="ul1">
            <li>1111111111111111111111</li>
            <li>2222222222222222222222</li>
            <li>3333333333333333333333</li>
            <li>4444444444444444444444</li>
            <li>5555555555555555555555</li>
            <li>6666666666666666666666</li>
            <li>7777777777777777777777</li>
            <li>8888888888888888888888</li>
            <li>9999999999999999999999</li>
        </ul>
        <ul id="ul2"></ul>
    </div>
    <script>
        window.onload = roll(50);

        function roll(t) {
            var ul1 = document.getElementById("ul1");
            var ul2 = document.getElementById("ul2");
            var box = document.getElementById("box");
            ul2.innerHTML = ul1.innerHTML;
            box.scrollTop = 0;
            var timer = setInterval(rollStart, t);
            box.onmouseover = function () {
                clearInterval(timer)
            }
            box.onmouseout = function () {
                timer = setInterval(rollStart, t);
            }
        }

        function rollStart() {
            if (box.scrollTop >= ul1.scrollHeight) {
                box.scrollTop = 0;
            } else {
                box.scrollTop++;
            }
        }
    </script>
</body>

</html>
原文地址:https://www.cnblogs.com/henuyuxiang/p/11557636.html