<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Table Scroll Up</title>
<style>
table {
border-collapse: collapse;
width: 100%;
}
th, td {
border: 1px solid black;
padding: 8px;
text-align: left;
}
</style>
</head>
<body>
<table id="myTable">
<tr>
<th>Header 1</th>
<th>Header 2</th>
<th>Header 3</th>
</tr>
<tr>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>2</td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
<td>4</td>
</tr>
<tr>
<td>5</td>
<td>5</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>6</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>7</td>
<td>7</td>
</tr>
</table>
<script>
function scrollUp() {
//获取表格元素
var table = document.getElementById("myTable");
//获取表格的行数
var rows = table.rows;
var rowCount = rows.length;
//遍历表格的所有行，将最后一行添加到父节点中
for (var i = 0; i < rowCount; i++) {
rows[i].parentNode.appendChild(rows[1]);
}
}
setInterval(scrollUp, 1000);
</script>
</body>
</html>
