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JavaScript onkeyup Event
 Complete Event Reference
Definition and Usage
The onkeyup event occurs when a keyboard key is released.
Syntax
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onkeyup="SomeJavaScriptCode"
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| Parameter |
Description |
| SomeJavaScriptCode |
Required. Specifies a JavaScript to be executed when the
event occurs. |
Supported by the following HTML tags:
<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>
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Supported by the following JavaScript objects:
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document, image, link, textarea |
Example
When typing letters in the input field in the following example, the letters
will change to uppercase (one by one):
<html>
<head>
<script type="text/javascript">
function upperCase(x)
{
var y=document.getElementById(x).value;
document.getElementById(x).value=y.toUpperCase();
}
</script>
</head>
<body>
Enter your name: <input type="text"
id="fname" onkeyup="upperCase(this.id)">
</body>
</html>
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The output of the code above will be:
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Complete Event Reference
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