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JavaScript onKeyUp 事件

作者:w3pop.com 翻译/整理:w3pop.com 发布:2007-04-28 浏览:7749 :: ::

Definition and Usage
定义与用法

The onkeyup event occurs when a keyboard key is released.
当松开键盘的按键时触发onkeyup事件

Syntax
语法

onkeyup="所要执行的脚本"

Parameter
参数		 Description
注释
SomeJavaScriptCode
所要执行的脚本		 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脚本。

Supported by the following HTML tags:
所支持的HTML标签：

<a>, <acronym>, <address>, <area>, <b>, <bdo>, <big>, <blockquote>, <body>, <button>, <caption>, <cite>, <code>, <dd>, <del>, <dfn>, <div>, <dt>, <em>, <fieldset>, <form>, <h1> to <h6>, <hr>, <i>, <input>, <kbd>, <label>, <legend>, <li>, <map>, <object>, <ol>, <p>, <pre>, <q>, <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：

document, image, link, textarea

Example
实例

When typing letters in the input field in the following example, the letters will change to uppercase (one by one):
在下面的例子中，在文本框内输入的字母将自动被转为大写：

<html>
<head>
<script type="text/javascript">
function upperCase(x)
{
var y=document.getElementById(x).value
document.getElementById(x).value=y.toUpperCase()
}
</script>
</head>
<body>
输入些子母：<input type="text"
id="code" onkeyup="upperCase(this.id)">
</body>
</html>

The output of the code above will be:
输出结果为：

输入些字母：

Try-It-Yourself Demos
互动演示

onkeyup
How to use onkeyup.
如何应用onkeyup

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