onmouseover event
onmouseover Event
Instance
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script>
function bigImg(x){
x.style.height="64px";
x.style.width="64px";
}
function normalImg(x){
x.style.height="32px";
x.style.width="32px";
}
</script>
</head>
<body>
<img onmouseover="bigImg(this)" onmouseout="normalImg(this)" border="0" src="smiley.gif" alt="Smiley" width="32" height="32">
<p>函数 bigImg() 在鼠标指针移动到笑脸图片是触发。</p>
<p>函数 normalImg() 在鼠标指针移出笑脸图片是触发.</p>
</body>
</html>Run Instance»
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Definition and usage
The onmouseover event occurs when the mouse pointer moves over the specified element.
Syntax
HTML:
<elementonmouseover="SomeJavaScriptCode">
JavaScript:
object.onmouseover=function(){SomeJavaScriptCode};
| Parameters | Description |
|---|---|
| SomeJavaScriptCode | Required. Specifies the JavaScript to be executed when this event occurs. |
Browser support
The onmouseover event All major browsers support
HTML tags that support this event:
The onmouseover attribute can be used on all HTML elements except: <base>, <bdo> , <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title>.
