Originariamente inviato da Ufotizio
scusa fcaldera, non riesco a capire come relazione questo script al form
copia e incolla

codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="it" xml:lang="it">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>input numerico</title>
        
        
        <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
        <script type="text/javascript">
      $(document).ready(function() {

        (function() {
            var editingKeys = {
               '8'  : 'backspace',
               '46' : 'canc',
               '37' : 'leftarrow',
               '39' : 'rightarrow'
            };

            $('#inputid').bind('keydown', function(e) {
               var key = e.keyCode;
               var keynum = (key > 47) && (key < 58);
               var keypad  = (key > 95) && (key < 106);  // tastiera numerica
               if (!keynum && !keypad) {
                   return (key in editingKeys);
               }
            });
        })();

      });
    </script>
    </head>

<body>

    <input type="text" maxlength="10" id="inputid" />

</body>
</html>