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JavaScript onmousemove 事件
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Definition and Usage
定义与用法
The onmousemove event occurs when the mouse pointer is moved.
当鼠标移动时触发onmousemove事件
Syntax
语法
onmousemove="所要执行的代码" |
| Parameter 参数 | Description 注释 |
|---|---|
| SomeJavaScriptCode 所要执行的代码 | Required. Specifies a JavaScript to be executed when the event occurs. 必选项。当事件触发时所要执行的代码 |
Supported by the following HTML tags:
所支持的HTML标签：
| <a>, <address>, <area>, <b>, <bdo>, <big>, <blockquote>, <body>, <button>, <caption>, <cite>, <code>, <dd>, <dfn>, <div>, <dl>, <dt>, <em>, <fieldset>, <form>, <h1> to <h6>, <hr>, <i>, <img>, <input>, <kbd>, <label>, <legend>, <li>, <map>, <ol>, <p>, <pre>, <samp>, <select>, <small>, <span>, <strong>, <sub>, <sup>, <table>, <tbody>, <td>, <textarea>, <tfoot>, <th>, <thead>, <tr>, <tt>, <ul>, <var> |
Supported by the following JavaScript objects:
所支持的JavaScript对象：
| onmousemove is, by default, not an event of any object, because mouse movement happens very frequently. onmousemove在默认情况下不是任何一个对象的事件，因为鼠标是频繁移动的。 |
Tips and Notes
注意
Note: Each time a user moves the mouse one pixel, a mousemove event occurs. It takes system resources to process all mousemove events. Use this event carefully!
注意：当用户鼠标移动一像素时，就会触发一次mousemove事件。这将非常消耗系统的资源，请谨慎使用。
Example
实例
In the following example we will display an alert box when the user moves the mouse pointer over the image:
在下面的例子中，当用户的鼠标在图片上移动时将弹出一个消息框：
<img src="image_w3default.gif" alt="RuanChen" |
The output of the code above will be:
输出结果为：
 |
Try-It-Yourself Demos
互动演示
onmousemove
How to use onmousemove.
如何应用onmousemove
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