HTML onscroll 事件属性

htmlweb developmentfront end technology更新于 2025/12/20 23:40:17

当 HTML 元素在 HTML 文档中使用其滚动条滚动时，会触发 HTML onscroll 事件属性。

语法

以下是语法 −

<tagname onscroll=”script”></tagname>

让我们看一个 HTML onscroll 事件属性的示例 −

示例

<!DOCTYPE html>
<html>
<head>
<style>
   body {
      color: #000;
      height: 100vh;
      background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;
      text-align: center;
      padding: 20px;
   }
   .box-para {
      border: 2px solid #fff;
      padding: 10px;
      width: 200px;
      height: 200px;
      overflow: scroll;
      margin: 1rem auto;
   }
</style>
</head>
<body>
<h1>HTML onscroll Event Attribute Demo</h1>
<p onscroll="scrollFn()" class="box-para">
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text. This is a paragraph element with some dummy text. 
This is a paragraph element with some dummy text.</p>
<p>Scroll above paragraph text to increase its font size</p>
<script>
   function scrollFn() {
      document.querySelector(".box-para").style.fontSize = "1.5rem";
   }
</script>
</body>
</html>