在 JavaScript 中设置带间隔的滚动视图

javascriptweb developmentobject oriented programming更新于 2025/11/18 13:32:17

为此，使用 scrollTop 和 scrollHeight 的概念。

示例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initialscale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fontawesome/4.7.0/css/font-awesome.min.css">
<style>
   #scrollDemo {
      height: 300px;
      overflow-y: scroll;
   }
   #scrollDataFeatures {
      height: 500px;
      background-color: skyblue;
   }
</style>
</head>
<body>
<div id="scrollDemo">
<div id="scrollDataFeatures"></div>
<h3>See the below Message and Scroll UP</h3>
</div>
<script>
   var scrollData = document.getElementById("scrollDemo");
   scrollData.scrollTop = scrollData.scrollHeight
   setInterval(() =>{
      var heading3Data = document.createElement("h3");
      heading3Data.innerHTML = "Scroll Down...Please Scroll UP"
      scrollData.appendChild(heading3Data);
      scrollData.scrollTop = scrollData.scrollHeight
   }, 30*1000)
</script>
</body>
</html>

要运行上述程序，请保存文件名 anyName.html(index.html)，然后右键单击该文件并选择在 VSCode 编辑器中使用实时服务器打开选项。