GlobalEventHandlers.onscroll

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句法
范例
规范
浏览器兼容性
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onscroll 特性为 GlobalEventHandlers 混合 EventHandler 处理 scroll 事件。

scroll event fires when the document view or an element has been scrolled, whether by the user, a Web API ，或用户代理 .

注意： Don't confuse onscroll with onwheel !

onwheel handles general wheel rotation, while onscroll handles scrolling of an object's content.

句法

target.onscroll = functionRef

值

functionRef: A function name, or a 函数表达式 . The function receives a UIEvent object as its sole argument.

Only one onscroll handler can be assigned to an object at a time.

For greater flexibility, you can pass a scroll event to the EventTarget.addEventListener() method instead.

范例

This example monitors scrolling on a <textarea> , and logs the element's vertical scroll position accordingly.

HTML

<textarea>1 2 3 4 5 6 7 8 9</textarea>
<p id="log"></p>

CSS

textarea {
  width: 4rem;
  height: 8rem;
  font-size: 3rem;
}

JavaScript

const textarea = document.querySelector('textarea');
const log = document.getElementById('log');
textarea.onscroll = logScroll;
function logScroll(e) {
  log.textContent = `Scroll position: ${e.target.scrollTop}`;
}

结果

规范

规范	状态	注释
HTML 实时标准 The definition of 'onscroll' in that specification.	实时标准
DOM (文档对象模型) 3 级事件规范 The definition of 'onscroll' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`onscroll`	Chrome Yes	Edge ≤18	Firefox Yes	IE ?	Opera ?	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android ?	Safari iOS ?	Samsung Internet Android Yes

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句法

值

范例

HTML

CSS

JavaScript

结果

规范

浏览器兼容性

图例

另请参阅

元数据

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