JavaScript DHTML/Form Control/Formatted TextField
Allowing Only Numbers into a Text Box
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/* JavaScript Bible, Fourth Edition by Danny Goodman John Wiley & Sons CopyRight 2001
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<HTML> <HEAD> <TITLE>Letting Only Numbers Pass to a Form Field</TITLE> <SCRIPT LANGUAGE="JavaScript"> function checkIt(evt) {
evt = (evt) ? evt : window.event var charCode = (evt.which) ? evt.which : evt.keyCode if (charCode > 31 && (charCode < 48 || charCode > 57)) { status = "This field accepts numbers only." return false } status = "" return true
} </SCRIPT> </HEAD> <BODY>
Letting Only Numbers Pass to a Form Field
<FORM onSubmit="return false"> Enter any positive integer: <INPUT TYPE="text" NAME="numeric"
onKeyPress="return checkIt(event)">
</FORM> </BODY> </HTML>
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