<![CDATA[
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>자동 스크롤하기</title>
<link rel="stylesheet" href="style_js.css">
</head>
<body style="text-align: center">
<h2>자동 스크롤</h2><hr>
<script>
for (let i = 1; i <= 25; i++)
document.write(i + '<hr>');
let pos = 0;
const speed = 40; // 위아래 스크롤 속도
setInterval(function() {
window.scrollBy(0, speed);
pos = pos + speed;
if (pos >= innerHeight + speed) {
pos = 0;
window.scrollTo(0, 0);
}
}, 500);
</script>
</body>
</html>
]]>