html
html
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<form novalidate>
<input type="text" size="12" maxlength="12" onkeypress="return numberkey">
<button type="submit">
Submit
</button>
</form>
</body>
</html>
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css
css
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body {
}
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js
js
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function numberkey(evt)
{
var charCode=(evt.which) ? evt.which : event.keyCode
if (charCode =12)
return false ;
return true ;
}
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