?? allowcharsexample.htm
字號:
<html>
<head>
<title>Allow Characters Example</title>
<script type="text/javascript" src="detect.js"></script>
<script type="text/javascript" src="eventutil.js"></script>
<script type="text/javascript" src="textutil.js"></script>
</head>
<body>
<p>Try typing in the textbox. You can only type number characters.</p>
<form method="post" action="javascript:alert('Submitted')">
<textarea rows="10" cols="25" validchars="0123456789V" onkeypress="return TextUtil.allowChars(this, event)"></textarea>
<input type="submit" value="Submit Form" />
</form>
</body>
</html>
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