onKeyUp Event
 Complete Event Object Reference
Definition and Usage
The onkeyup event occurs when a keyboard key is released.
Syntax
onkeyup="SomeJavaScriptCode"
|
| 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> |
Supported by the following JavaScript objects:
|
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>
|
The output of the code above will be:
Try-It-Yourself Demos
onkeyup
How to use onkeyup.
Complete Event Object Reference
 |
|
Get Your Diploma!
W3Schools' Online Certification Program is the perfect solution for busy
professionals who need to balance work, family, and career building.
The HTML Certificate is for developers who want to document their knowledge of HTML, XHTML, and CSS.
The JavaScript Certificate is for developers who want to document their knowledge of JavaScript and the HTML DOM.
The XML Certificate is for developers who want to document their knowledge of XML, XML DOM and XSLT.
The ASP Certificate is for developers who want to document their knowledge of ASP, SQL, and ADO.
The PHP Certificate is for developers who want to document their knowledge of PHP and SQL (MySQL).
|
|
