时间：2021-07-01 10:21:17 帮助过：15人阅读
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
* {
border: 0;
padding: 0;
margin: 0;
box-sizing: border-box;
}
p#d1, p#d2 {
width: 102px;
height: 30px;
margin: 50px auto;
border: 1px solid black;
overflow: hidden;
}
p#d3, p#d4 {
width: 300px;
height: 100px;
margin: 50px auto;
border: 1px solid black;
overflow: hidden;
}
</style>
</head>
<body>
<p id="d1">abcdefghijklmnopqrstuvwxyz123456789</p>
<p id="d2">987654321zyxwvutsrqponmlkjihgfedcba</p>
<p id="d3">
<p class="pd">
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa2</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa3</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa5</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa6</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa7</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa8</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa9</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa10</p>
</p>
</p>
<p id="d4">
<p class="pd2">
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa2</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa3</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa5</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa6</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa7</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa8</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa9</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa10</p>
</p>
</p>
<script>
//向左转
var d1 = document.getElementById("d1");
d1.innerHTML += d1.innerHTML;
setInterval(function () {
document.title = d1.scrollLeft;
d1.scrollLeft++;
if (d1.scrollLeft >= d1.scrollWidth / 2) {
d1.scrollLeft = 0;
}
}, 20);
//向右转
var d2 = document.getElementById("d2");
d2.innerHTML += d2.innerHTML;
d2.scrollLeft = d2.scrollWidth / 2;
setInterval(function () {
document.title = d2.scrollLeft;
d2.scrollLeft--;
if (d2.scrollLeft <= 0) {
d2.scrollLeft = d2.scrollWidth / 2;
}
}, 20);
//向上转
var d3 = document.getElementById("d3");
var pd = d3.getElementsByClassName("pd")[0];
pd.innerHTML += pd.innerHTML;
setInterval(function () {
d3.scrollTop++;
if (d3.scrollTop >= d3.scrollHeight / 2) {
d3.scrollTop = 0;
}
}, 20);
//向下转
var d4 = document.getElementById("d4");
var pd2 = d4.getElementsByClassName("pd2")[0];
pd2.innerHTML += pd2.innerHTML;
d4.scrollTop = d4.scrollHeight / 2;
setInterval(function () {
d4.scrollTop--;
if (d4.scrollTop <= 0) {
d4.scrollTop = d4.scrollHeight / 2;
}
}, 20);
</script>
</body>
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